Nobuhito KOKUBO
| Department of Engineering Science | Associate Professor |
| Cluster III (Fundamental Science and Engineering) | Associate Professor |
| Division of General Education（School of Informatics and Engineering ） | Associate Professor |
| Division of General Education（Graduate School of Informatics and Engineering） | Associate Professor |
| Nanotribology Research Center | Associate Professor |
Researcher Information
Research Keyword
Career
- 01 Jan. 2012
電気通信大学大学院情報理工学研究科, 准教授 - 01 Sep. 2011
電気通信大学情報理工学部, 准教授 - 01 Apr. 2007 - 31 Aug. 2011
Kyushu University, Center for Research and Advancement in Higher Education, Assistant Professor - 01 Jun. 2006 - 31 Mar. 2007
Kyushu University, Center for Research and Advancement in Higher Education, Assistant Professor - 01 May 2006 - 31 May 2006
Kyushu University, Center for Research and Advancement in Higher Education, Assistant Professor - 01 Apr. 2004 - 30 Apr. 2006
University of Tsukuba, Institute of Materials Science, Assistant Professor - 01 Oct. 2003 - 31 Mar. 2004
University of Tsukuba, Institute of Materials Science, Assistant Professor - 01 Oct. 2001 - 30 Sep. 2003
Leiden University, Kamerlingh Onnes Laboratory, 博士研究員 - 01 Oct. 1999 - 30 Sep. 2001
Leiden University, Kamerlingh Onnes Laboratory, 客員研究員
Educational Background
Member History
- 01 Apr. 2022 - 31 Mar. 2024
運営指導委員, 神奈川県立相模原高等学校スーパーサイエンスハイスクール運営指導委員会, Others - 01 Apr. 2021
第77～78期代議員, 日本物理学会, Society - 16 Mar. 2021 - 19 Mar. 2021
2021年第68回応用物理学会 講演奨励賞審査委員, 2021年第68回応用物理学会 講演奨励賞審査委員, Society - 12 Mar. 2021 - 15 Mar. 2021
日本物理学会 学生優秀発表賞 領域6審査委員, 日本物理学会 学生優秀発表賞 領域6審査委員, Society, 日本物理学会 2021年第76回年次大会 - 05 Dec. 2018 - 10 Dec. 2020
幹事, ボルテックスフォーラム総会, Others - 08 Sep. 2020 - 11 Sep. 2020
日本物理学会 学生優秀発表賞 領域6審査委員, 日本物理学会 学生優秀発表賞 領域6審査委員, Society - 09 Sep. 2018 - 12 Sep. 2018
学生優秀発表賞 領域6審査委員, 学生優秀発表賞 領域6審査委員, Society - Mar. 2018
学生優秀発表賞 領域6審査委員, 学生優秀発表賞 領域6審査委員, Society - May 2009 - Apr. 2010
領域世話人（領域６）, 日本物理学会, Society
Research Activity Information
Paper
- NbTiN SQUID-on-tip fabricated by self-aligned deposition using reactive DC magnetron sputtering
N. Kokubo; B. Gerelkhuu
Applied Physics Letters, AIP Publishing, 124, 26, 262601-1-262601-5, Jun. 2024, Peer-reviwed, We fabricate superconducting quantum interference devices (SQUIDs) made of niobium-titanium nitride (NbTiN) thin films on the apex of sharp quartz capillaries. By incorporating reactive DC magnetron sputtering into the self-aligned deposition process for the SQUID-on-tip (SOT) fabrication, we produce NbTiN SOT devices with an effective diameter of ∼100 nm. The ø110 nm device has a superconducting transition temperature of 13.2 K, magnetic flux noise down to 0.7 μΦ0/Hz0.5 (4 K), and operating temperatures of 1.8–10 K. The developed technique enables the synthesis of nitride and other superconductors, thereby expanding the range of materials available for SOT devices.
Scientific journal, English - Finite-size effect of critical penetration of Pearl vortices in narrow superconducting flat rings
N. Kokubo; S. Okayasu; T. Nojima
Journal of Applied Physics, 125, 22, 223906-1-223906-6, 14 Jun. 2019, Peer-reviwed
Scientific journal, English - Flux-flow instability in 2H-NbSe2 superconducting thin crystals stamped on SiO2/Si substrates
J. Yoshida; H. Ando; N. Kokubo
Journal of Physics: Conference Series, Institute of Physics Publishing, 969, 1, 012073-1-012073-6, 19 Apr. 2018, Peer-reviwed
International conference proceedings, English - Direct observation of magnetic flux and interstitial vortices in perforated mesoscopic squares of superconducting films
M Mitsuishi; N Kokubo; K Kitano; S Okayasu; T Nojima; T Sasaki
J. Phys.: Conf. Ser., 969, 012074-1-012074-6, 2018, Peer-reviwed
International conference proceedings, English - Vortex states near absolute zero in a weak-pinning amorphous Mo x Ge1−x film probed by pulsed mode-locking resonance
N. Sohara; A. Ochi; E. Murakami; K. Ienaga; S. Kaneko; N. Kokubo; S. Okuma
Journal of Physics: Conf. Series, 871, 12022, Jul. 2017, Peer-reviwed
Scientific journal, English - Dynamic melting of anisotropy vortex lattice: Velocity dependence
Inoue T.; Ochi A.; Kawamura Y.; Ienaga K.; Kaneko S.; Kokubo N.; Okuma S.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, 72.1, 1625-1625, 2017, 傾斜磁場下では傾斜方向に引き伸ばされた2種類の異方的渦糸格子AとBが形成される。Aは1辺が傾斜方向に平行、Bは垂直である。これらを駆動させた状態で、渦糸密度増大による動的融解を調べている。これまでに融解は、A、B共に短辺が等方的格子の融解時の辺にほぼ一致するときに起こること、ピン止めの効かない高速域では、渦糸密度増大により、格子BからAへの変化を経由して完全な液体相へ転移することがわかった。講演ではピン止め効果の効く低速域の結果も示し、異方的格子の動的融解条件を包括的に議論する。
Japanese - Vortex shells in mesoscopic triangles of amorphous superconducting thin films
N. Kokubo; H. Miyahara; S. Okayasu; T. Nojima
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 530, 42-45, Nov. 2016, Peer-reviwed
Scientific journal, English - Equilibrium and Dynamic Vortex States near Absolute Zero in a Weak Pinning Amorphous Film
Aguri Ochi; Naoya Sohara; Shin-ichi Kaneko; Nobuhito Kokubo; Satoshi Okuma
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85, 4, 044701-1-044701-7, Apr. 2016, Peer-reviwed
Scientific journal, English - Dynamic Melting of Driven Abrikosov Lattices in an Amorphous MoxGe1-x Film in Tilted Field
Aguri Ochi; Yasuki Kawamura; Toshiki Inoue; Tetsuya Kaji; Dobroka Mihaly; Shin-ichi Kaneko; Nobuhito Kokubo; Satoshi Okuma
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 85, 3, 034712-1-034712-6, Mar. 2016, Peer-reviwed
Scientific journal, English - 21pAR-2 Vortex shells in mesoscopic triangles of amorphous superconducting thin films
Kokubo N.; Miyahara H.; Okayasu S.; Nojima T.; Sasaki T.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 71, 1732-1732, 2016
Japanese - Dynamic Melting of Anisotropy Vortex Lattice III
Inoue Toshiki; Ochi A.; Kawamura Y.; Ienaga K.; Kaneko S.; Kokubo N.; Okuma S.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, 71, 1439-1439, 2016,これまでの研究により、傾斜磁場下のアモルファスMoxGe1-x膜において異方的渦糸格子が観測された。このとき格子は傾斜方向に引き伸ばされる。我々は渦糸格子を傾斜と垂直方向に高速駆動した時、融解磁場近傍で格子の形状が変化することを明らかにした。本研究ではさらに、渦糸格子を傾斜方向に低速駆動した際にも同様に、融解磁場近傍で格子形状の変化が見られたことを報告する。
Japanese - Observation of vortex states in small superconductors with artificial pinning centres.
Kitano K.; Okayasu S.; Nojima T.; Sasaki T.; Kokubo N.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan, 71, 1505-1505, 2016,ピン止め(小穴)を人工的に導入することにより微小超伝導体の量子渦状態を能動的に制御し、走査SQUID磁気顕微鏡で直接可視化している。今回、正方形状の微小超伝導体に設けたアンチドットの大きさや配置が量子渦配列に与える影響を報告する。
Japanese - Unusual current-voltage characteristics and dynamic correlation of rotating vortex-lattice rings
Y. Kawamura; Y. Matsumura; Y. Yamazaki; S. Kaneko; N. Kokubo; S. Okuma
SUPERCONDUCTOR SCIENCE & TECHNOLOGY, 28, 4, 045002-1-045002-7, Apr. 2015, Peer-reviwed
Scientific journal, English - Commensurate and Incommensurate Vortex States Confined in Mesoscopic Triangles of Weak Pinning Superconducting Thin Films
Nobuhito Kokubo; Hajime Miyahara; Satoru Okayasu; Tsutomu Nojima
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 84, 4, 043704-1-043704-04, Apr. 2015, Peer-reviwed
Scientific journal, English - 19aPS-131 Manipulation of vortex states confined in small antidotes in superconducting double layer
Mochizuki R.; Okayasu S.; Nojima T.; Sasaki T.; Kokubo N.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 70, 1480-1480, 2015
Japanese - 24aPS-15 Observation of vortex states in mesoscopic triangles of amorphous MoGe superconducting films
Miyahara H.; Okayasu S.; Nojima T.; Kokubo N.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 70, 1768-1768, 2015
Japanese - 24aPS-13 Orientation of a vortex lattice driven through nanochannels in superconducting nitride double layers
Yamazaki F.; Mochiduki R.; Kokubo N.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 70, 1766-1766, 2015
Japanese - 24aPS-11 Observation of fast driven vortex-lattice flow and effects of anisotropy
Sohara N.; Ochi A.; Kaneko S.; Kokubo N.; Okuma S.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 70, 1765-1765, 2015
Japanese - 21pCT-7 Observation of vortex dynamics by pulse mode locking at low temperature II
Ochi A.; Sohara N.; Murakami E.; Kokubo N.; Okuma S.
Meeting Abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 70, 1658-1658, 2015
Japanese - Direct Imaging of Vortex Polygons and Vortex Shells in Mesoscopic Squares of a Weak Pinning Superconducting Thin Film
Nobuhito Kokubo; Satoru Okayasu; Tsutomu Nojima; Hirotaka Tamochi; Bunju Shinozaki
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 83, 8, 083704-1-083704-05, Aug. 2014, Peer-reviwed
Scientific journal, English - Flow and Tilt-Induced Orientation of the Moving Vortex Lattice in Amorphous NbGe Superconducting Thin Films
Nobuhito Kokubo; Tetsuya Yoshimura; Bunjyu Shinozaki
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 82, 9, 094702-1-094702-07, Sep. 2013, Peer-reviwed
Scientific journal, English - Velocity-induced reorientation of a fast driven Abrikosov lattice
S. Okuma; D. Shimamoto; N. Kokubo
PHYSICAL REVIEW B, 85, 6, Feb. 2012, Peer-reviwed
Scientific journal, English - Characteristics of T-c and rho(T) of polycrystalline (In2O3)-(ZnO) films with low carrier density
B. Shinozaki; S. Takada; N. Kokubo; K. Makise; T. Asano; K. Yamada; K. Yano; H. Nakamura
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 2012, Peer-reviwed
International conference proceedings, English - Depression of positive magneto-conductance due to anti-weak localization effect in annealed In2O3-ZnO thick films
B. Shinozaki; S. Ezaki; K. Hidaka; K. Makise; T. Asano; N. Kokubo; K. Yamada; K. Yano; H. Nakamura
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 2012, Peer-reviwed
International conference proceedings, English - Dynamic ordering and lattice orientation of driven vortex matter
S. Okuma; D. Shimamoto; N. Kokubo
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 022093, 2012, Peer-reviwed
International conference proceedings, English - Orientation of a Moving Vortex Lattice in an Amorphous Mo1-xGex Superconducting Film
N. Kokubo; H. Tamochi; B. Shinozaki; T. Nishizaki; N. Kobayashi
26TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT26), PTS 1-5, 400, 022057, 2012, Peer-reviwed
International conference proceedings, English - Superconducting characteristics and microstructure of polycrystalline Zn-doped In2O3 films
B. Shinozaki; S. Takada; N. Kokubo; K. Makise; K. Mitsuishi; K. Yamada; K. Yano; H. Nakamura
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 471, 21-22, 717-720, Nov. 2011, Peer-reviwed
Scientific journal, English - Quantum melting and lattice orientation of driven vortex matter
S. Okuma; H. Imaizumi; D. Shimamoto; N. Kokubo
Physical Review B - Condensed Matter and Materials Physics, 83, 6, 11 Feb. 2011, Peer-reviwed
Scientific journal, English - Quantum melting and lattice orientation of driven vortex matter
S. Okuma; H. Imaizumi; D. Shimamoto; N. Kokubo
PHYSICAL REVIEW B, 83, 6, 064520-1-064520-7, Feb. 2011, Peer-reviwed
Scientific journal, English - Lattice orientation of driven vortex matter in amorphous superconducting films
D. Shimamoto; S. Okuma; N. Kokubo
INTERNATIONAL SYMPOSIUM: NANOSCIENCE AND QUANTUM PHYSICS 2011 (NANOPHYS'11), 302, 012027-1-012027-4, 2011, Peer-reviwed
International conference proceedings, English - Rotating vortex-lattice rings in superconductors
Y. Matsumura; S. Okuma; N. Kokubo
PHYSICA E-LOW-DIMENSIONAL SYSTEMS & NANOSTRUCTURES, 43, 3, 707-710, Jan. 2011, Peer-reviwed
Scientific journal, English - Novel vortex dynamics in Corbino-disk superconductors
S. Okuma; Y. Yamazaki; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 470, S776-S778, Dec. 2010, Peer-reviwed
Scientific journal, English - 24aXB-4 Vortex Distributions and Pinning Effect in Mesoscopic superconductors observed by Scanning SQUID Microscopy
Kokubo,N; Okayasu,S; Kanda,A; Shinozaki,B
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 65, 2, 746, Aug. 2010
Scientific journal, Japanese - Scanning SQUID microscope study of vortex polygons and shells in weak-pinning disks of an amorphous superconducting film
Nobuhito Kokubo; Satoru Okayasu; Akinobu Kanda; Bunju Shinozaki
PHYSICAL REVIEW B, 82, 1, 014501-1- 014501-8, Jul. 2010, Peer-reviwed
Scientific journal, English - Transport properties and microstructures of polycrystalline In2O3-ZnO thin films
K. Makise; K. Mitsuishi; N. Kokubo; T. Yamaguchi; B. Shinozaki; K. Yano; K. Inoue; H. Nakamura
JOURNAL OF APPLIED PHYSICS, 108, 2, 023704-1-023704-6, Jul. 2010, Peer-reviwed
Scientific journal, English - Lattice orientations of driven vortex matter in amorphous MoGe films
N. Kokubo; T. Nishizaki; B. Shinozaki; P. H. Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 470, 1, 43-47, Jan. 2010, Peer-reviwed
Scientific journal, English - Dynamic response and ordering of rotating vortices in superconducting Corbino disks
S. Okuma; Y. Yamazaki; N. Kokubo
PHYSICAL REVIEW B, 80, 22, 220501-1-220501-4, Dec. 2009, Peer-reviwed
Scientific journal, English - Intrinsic quantum melting of a driven vortex lattice in amorphous Mox Ge1-x films
S. Okuma; H. Imaizumi; N. Kokubo
Physical Review B - Condensed Matter and Materials Physics, 80, 13, 22 Oct. 2009, Peer-reviwed
Scientific journal, English - Intrinsic quantum melting of a driven vortex lattice in amorphous MoxGe1-x films
S. Okuma; H. Imaizumi; N. Kokubo
PHYSICAL REVIEW B, 80, 13, 132503-1- 132503-4, Oct. 2009, Peer-reviwed
Scientific journal, English - Mode locking features of driven vortex matter in an amorphous MoGe film detected by rf impedance technique
N. Kokubo; B. Shinozaki
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 469, 15-20, 1099-1101, Aug. 2009, Peer-reviwed
Scientific journal, English - Dynamic melting of driven vortex matter below 1 K
S. Okuma; H. Imaizumi; Y. Suzuki; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 469, 15-20, 1063-1066, Aug. 2009, Peer-reviwed
Scientific journal, English - Order-disorder transition and flow noise in an a-MoxGe1-x film
S. Okuma; Y. Suzuki; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 469, 15-20, 1096-1098, Aug. 2009, Peer-reviwed
Scientific journal, English - Annealing effect on the superconductivity of In2O3-ZnO thin films
B. Shinozaki; N. Kokubo; K. Makise; S. Takada; T. Yamaguti; S. Ogura; K. Yamada; K. Yano; K. Terai; S. Tomai; H. Nakamura
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 469, 15-20, 956-969, Aug. 2009, Peer-reviwed
Scientific journal, English - Broadband Noise of Driven Vortices at the Mode-Locking Resonance
S. Okuma; J. Inoue; N. Kokubo
NOISE AND FLUCTUATIONS, 1129, 117-+, 2009, Peer-reviwed
International conference proceedings, English - Flow Noise of Driven Vortex Matter in Amorphous Superconducting Films
S. Okuma; Y. Suzuki; N. Kokubo
NOISE AND FLUCTUATIONS, 1129, 93-+, 2009, Peer-reviwed
International conference proceedings, English - The Hall effect measurements in the high resistance In2O3-ZnO polycrystalline films
K. Yamada; T. Yamaguti; N. Kokubo; B. Shinozaki; K. Yano; H. Nakamura
Transactions of Materials Research Society of Japan, 34, 755-757, 2009, Peer-reviwed
International conference proceedings, English - History dependent vortex configurations in superconducting disks of amorphous MoGe
N. Kokubo; S. Okayasu; A. Kanda; B. Shinzaki
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 2, 150, 022044-1-022044-4, 2009, Peer-reviwed
International conference proceedings, English - Field dependent orientation of driven vortex lattice in amorphous MoGe films
N. Kokubo; B. Shinzaki; P. H. Kes
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5, 150, 052116-1-052116-4, 2009, Peer-reviwed
International conference proceedings, English - Order-disorder transition and flow noise for vortices in amorphous films
S. Okuma; Y. Suzuki; K. Kashiro; N. Kokubo
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5, 150, 052199-1-052199-4, 2009, Peer-reviwed
International conference proceedings, English - Dynamic melting of driven vortices at low temperature in a-MoxGe1-x films
S. Okuma; H. Imaizumi; K. Suzuki; Y. Suzuki; N. Kokubo
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PART 5, 150, 052200-1-052200-4, 2009, Peer-reviwed
International conference proceedings, English - Superconductivity in transparent zinc-doped In2O3 films having low carrier density
K. Makise; N. Kokubo; S. Takada; T. Yamaguti; S. Ogura; K. Yamada; B.Shinozaki; K. Yano; K. Inoue; H. Nakamura
Sci. Technol. Adv. Mater., 9, 044208-1-044208-6, 2009, Peer-reviwed
International conference proceedings, English - Superconductivity in In2O3-ZnO crystalline films
B. Shinozaki; N. Kokubo; S. Takada; T. Yamaguti; K. Yamada; K. Makise; K. Yano; K. Inoue; H. Nakamura
25TH INTERNATIONAL CONFERENCE ON LOW TEMPERATURE PHYSICS (LT25), PT 5A, 150, 5a, 052237-1-052237-4, 2009, Peer-reviwed
International conference proceedings, English - 量子化磁束のフロー状態とメゾスコピック性
小久保伸人
九州大学低温センターだより(ISSN 1881-9036), 九州大学低温センター, 3, 3, 22-29, 2009, Peer-reviwed, 超伝導体のピン止め特性の違いを利用して、サブミクロン幅のフロー線路（チャネル）を人工的に作成し、僅か数列にスライスされた磁束格子のフロー特性を調べてきた。磁束運動の周期性を捉えるモードロック共鳴法により、磁束格子が一列ずつ階段状に成長するメゾスコピック性や、チャネル幅と磁束密度のマッチング条件によって変化する磁束秩序構造、さらにこれが磁束ピン止めカの強弱と密接に関連することを明らかにしたので紹介する。
International conference proceedings, Japanese - Shell structures of vortices in superconducting disks of an amorphous MoGe film
N. Kokubo; S. Okayasu; B. Shinozaki
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 468, 15-20, 1316-1318, Sep. 2008, Peer-reviwed
Scientific journal, English - Vortex states in the peak effect regime of a-MoxGe1-x films probed by noise
S. Okuma; K. Kashiro; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 468, 15-20, 1319-1321, Sep. 2008, Peer-reviwed
Scientific journal, English - Dynamic response of circulating flux flow in amorphous superconducting films
S. Okuma; Y. Suzuki; Y. Yamazaki; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 468, 15-20, 1322-1324, Sep. 2008, Peer-reviwed
Scientific journal, English - Order-disorder transition of vortex matter in a-Mo(x)Ge(1-x) films probed by noise
S. Okuma; K. Kashiro; Y. Suzuki; N. Kokubo
PHYSICAL REVIEW B, 77, 21, 212505-1-212505-4, Jun. 2008, Peer-reviwed
Scientific journal, English - Mode locking and lattice orientations of driven vortex matter in amorphous MoGe films
N. Kokubo; B. Shinozaki; P. H. Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 468, 7-10, 581-584, Apr. 2008, Peer-reviwed
Scientific journal, English - Motion of current-driven vortex solids with weak pinning in the Corbino disk
S. Okuma; Y. Suzuki; Y. Yamazaki; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 468, 7-10, 613-616, Apr. 2008, Peer-reviwed
Scientific journal, English - Observation of an extended magnetic field penetration in amorphous superconducting MoGe films
Taichiro Nishio; Satoru Okayasu; Jun-ichi Suzuki; Nobuhito Kokubo; Kazuo Kadowaki
PHYSICAL REVIEW B, 77, 5, 052503-1-052503-4, Feb. 2008, Peer-reviwed
Scientific journal, English - Suppression of broadband noise at mode locking in driven vortex matter
S. Okuma; J. Inoue; N. Kokubo
PHYSICAL REVIEW B, 76, 17, 172503-1-172503-4, Nov. 2007, Peer-reviwed
Scientific journal, English - Peak anomaly of dynamic critical current in NbSe2 crystals
N. Kokubo; T. Asada; K. Kadowaki; K. Takita
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 463, 229-231, Oct. 2007, Peer-reviwed
Scientific journal, English - Vortex phase diagram and dynamics at low temperature in a thick a-MoxGe1-x film
S. Okuma; K. Suzuki; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 463, 232-235, Oct. 2007, Peer-reviwed
Scientific journal, English - Mode locking and noise of driven vortices near the peak-effect regime
S. Okuma; J. Inoue; N. Kokubo
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 463, 290-293, Oct. 2007, Peer-reviwed
Scientific journal, English - A trial usage of microprobes for improvement of a scanning SQUID microscope
S. Okayasu; N. Kokubo; I. Kakeya
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 463, 294-296, Oct. 2007, Peer-reviwed
Scientific journal, English - Broadband noise across the mode-locking freezing in driven vortex matter
S. Okuma; J. Inoue; N. Kokubo
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 21, 18-19, 3379-3386, Jul. 2007, Peer-reviwed
Scientific journal, English - Vortex states and peak effect at low temperature in thick amorphous films with weak pinning
S. Okuma; K. Kashiro; N. Kokubo
INTERNATIONAL JOURNAL OF MODERN PHYSICS B, 21, 18-19, 3387-3393, Jul. 2007, Peer-reviwed
Scientific journal, English - Dynamic ordering of driven vortex matter in the peak effect regime of amorphous MoGe films and 2H-NbSe2 crystals
N. Kokubo; T. Asada; K. Kadowaki; K. Takita; T. G. Sorop; P. H. Kes
PHYSICAL REVIEW B, 75, 18, 184512-1-184512-8, May 2007, Peer-reviwed
Scientific journal, English - Vortex phase diagram and dynamics near T=0 probed by voltage noise in amorphous superconducting films
S. Okuma; K. Suzuki; N. Kokubo
NOISE AND FLUCTUATIONS, 922, 237-+, 2007, Peer-reviwed
International conference proceedings, English - Vortex states near the peak effect regime detected by voltage noise
S. Okuma; K. Kashiro; N. Kokubo
Noise and Fluctuations, 922, 245-248, 2007, Peer-reviwed
International conference proceedings, English - Noise and mode-locking resonance of driven vortices in Type-II superconductors
S. Okuma; J. Inoue; N. Kokubo
NOISE AND FLUCTUATIONS, 922, 233-+, 2007, Peer-reviwed
International conference proceedings, English - Mode locking of vortex matter in the peak effect regime of amorphous MoGe films
N. Kokubo; K. Kadowaki; P. H. Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 445, 206-209, Oct. 2006, Peer-reviwed
Scientific journal, English - Vortex-slip transitions in superconducting a-NbGe mesoscopic channels
N Kokubo; TG Sorop; R Besseling; PH Kes
PHYSICAL REVIEW B, 73, 22, 224514 -1-224514 -8, Jun. 2006, Peer-reviwed
Scientific journal, English - Dynamical melting and mode locking of vortex matter in 2H-NbSe2 pure single crystals
N Kokubo; K Kadowaki; K Takita
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 437-38, 149-152, May 2006, Peer-reviwed
Scientific journal, English - History dependent vortex flow dynamics in mesoscopic channels
TG Sorop; N Kokubo; R Besseling; PH Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 437-38, 285-288, May 2006, Peer-reviwed
Scientific journal, English - 27aXF-5 MODE LOCKING AND DYNAMICAL ORDER OF VORTEX MATTER
Kokubo,N; Kadowaki,K; Takita,K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61, 1, 769, Mar. 2006
Scientific journal, Japanese - 27aXF-6 Dynamic Critical Current and Dynamic Melting of Vortex Matter
Asada,T; Kokubo,N; Kadowaki,K; Takita,K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 61, 1, 769, Mar. 2006
Scientific journal, Japanese - Dynamic ordering of vortex matter in amorphous MoGe films
N. Kokubo; S. Okayasu; K. Kadowaki
LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 853-+, 2006, Peer-reviwed
International conference proceedings, English - Mode locking of vortex matter in NbSe2 pure single crystals
N. Kokubo; K. Kadowaki; K. Takita
LOW TEMPERATURE PHYSICS, PTS A AND B, 850, 843-+, 2006, Peer-reviwed
International conference proceedings, English - Peak effect and dynamic melting of vortex matter in NbSe2 crystals
N Kokubo; K Kadowaki; K Takita
PHYSICAL REVIEW LETTERS, 95, 17, 177005-1-177005-4, Oct. 2005, Peer-reviwed
Scientific journal, English - 20aPS-92 Mode locking of vortex matter in BI-2212 single crystals
Asada,T; Kokubo,N; Yamamoto,T; Kadowaki,K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60, 2, 448, Aug. 2005
Scientific journal, Japanese - 25aXL-5 Thickness dependence of the effective penetration depth in a thin film
Nishio,T; Okayasu,S; Suzuki,J; Kokubo,N; Kadowaki,K
Meeting abstracts of the Physical Society of Japan, The Physical Society of Japan (JPS), 60, 1, 737, Mar. 2005
Scientific journal, Japanese - Effect of field history on the confinement of vortices in mesoscopic channels
N Kokubo; R Besseling; PH Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 412, 362-366, Oct. 2004, Peer-reviwed
Scientific journal, English - Dynamical fluctuations in mode locking experiments on vortices moving through mesoscopic channels
N Kokubo; R Besseling; PH Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 408, 573-574, Aug. 2004, Peer-reviwed
Scientific journal, English - Vortex matter driven through mesoscopic channels
PH Kes; N Kokubo; R Besseling
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 408, 478-481, Aug. 2004, Peer-reviwed
Scientific journal, English - Vortex lattice dynamics in a-NbGe detected by mode-locking experiments
R Besseling; O Benningshof; N Kokubo; PH Kes
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 408, 581-582, Aug. 2004, Peer-reviwed
Scientific journal, English - Dynamic ordering and frustration of confined vortex rows studied by mode-locking experiments
N Kokubo; R Besseling; PH Kes
PHYSICAL REVIEW B, 69, 6, 064504-1-064504-10, Feb. 2004, Peer-reviwed
Scientific journal, English - Magnetic imaging of a two dimensional vortex by scanning SQUID microscopy
T. Nishio; S. Okayasu; J. Suzuki; N. Kokubo; K. Kadowaki
NANOFAB CREST abstracts, 150, 2004, Peer-reviwed
English - Dynamic melting of confined vortex matter
R Besseling; N Kokubo; PH Kes
PHYSICAL REVIEW LETTERS, 91, 17, 177002-1-177002-4, Oct. 2003, Peer-reviwed
Scientific journal, English - Mode-locking and dynamic melting of vortex matter driven through mesoscopic channels
R Besseling; N Kokubo; PH Kes
JOURNAL DE PHYSIQUE IV, 12, PR9, 169-171, Nov. 2002, Peer-reviwed
Scientific journal, English - Mode locking of vortex matter driven through mesoscopic channels
N Kokubo; R Besseling; VM Vinokur; PH Kes
PHYSICAL REVIEW LETTERS, 88, 24, 247004-1-247004-4, Jun. 2002, Peer-reviwed
Scientific journal, English - Current-induced voltage noise at zero field in thick and thin films of a-MoxSi1-x
S Okuma; M Kamada; N Kokubo
PHYSICA C, 357, 560-563, Aug. 2001, Peer-reviwed
Scientific journal, English - Hall-conductivity sign change and fluctuations in amorphous NbxGe1-x films
N. Kokubo; J. Aarts; P. H. Kes
Physical Review B, 64, 014507-1-014507-5, Jun. 2001, Peer-reviwed
Scientific journal, English - Vortex phase diagram of disordered films of granular In and amorphous MoxSi1-x
S Okuma; M Arai; N Kokubo
PHYSICA B, 284, 640-641, Jul. 2000, Peer-reviwed
Scientific journal, English - Vortex dynamics in the mixed state of amorphous MoxSi1-x films
N Kokubo; S Okuma
PHYSICA B, 284, 865-866, Jul. 2000, Peer-reviwed
Scientific journal, English - Current-induced voltage noise below the Kosterlitz-Thouless transition
N Kokubo; M Mutou; M Kamada; S Okuma
PHYSICA B, 284, 981-982, Jul. 2000, Peer-reviwed
Scientific journal, English - Vortex dynamics in amorphous MoxSi1-x films detected by voltage noise
S Okuma; N Kokubo
PHYSICAL REVIEW B, 61, 1, 671-677, Jan. 2000, Peer-reviwed
Scientific journal, English - Vortex dynamics below the Kosterlitz-Thouless transition detected by voltage noise
S Okuma; N Kokubo; M Kamada
ADVANCES IN SUPERCONDUCTIVITY XII, XII, 1, 296-298, 2000, Peer-reviwed
International conference proceedings, English - The T=0 phase diagram of the field-driven superconductor-insulator transition in 2D
S. Okuma; S. Shinozaki; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), XI, 1, 185-188, 1999, Peer-reviwed
International conference proceedings, English - The vortex-glass transition and phase diagram in low-TC superconductors
S. Okuma; M. Arai; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), XI, 1, 203-206, 1999, Peer-reviwed
International conference proceedings, English - Dynamical properties of vortices in the mixed state of amorphous MoxSi1-x
N. Kokubo; S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo), XI, 1, 295-298, 1999, Peer-reviwed
International conference proceedings, English - The thermally nucleated dissipation process in zero field studied by voltage noise
N. Kokubo; M. Muto; S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo), XI, 1, 299-302, 1999, Peer-reviwed
International conference proceedings, English - Anomalous magnetoresistance near the superconductor-insulator transition in ultrathin films of alpha-MoxSi1-x
S Okuma; T Terashima; N Kokubo
PHYSICAL REVIEW B, 58, 5, 2816-2819, Aug. 1998, Peer-reviwed
Scientific journal, English - Voltage noise of an amorphous MoxSi1-x film near the superconducting transition in magnetic fields
N Kokubo; T Terashima; S Okuma
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 67, 3, 725-728, Mar. 1998, Peer-reviwed
Scientific journal, English - Superconductor-insulator transition driven by magnetic-field and disorder in two-dimensional MoxSi1-x films
S. Okuma; T. Terashima; N. Kokubo
Solid State Communications, Elsevier Ltd, 106, 8, 529-533, 1998, Peer-reviwed
Scientific journal, English - Frequency dependence of the complex resistivity in the vortex state
S. Okuma; T. Ito; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), X, 1, 75-78, 1998, Peer-reviwed
International conference proceedings, English - Voltage noise measurements in dirty superconducting films
N. Kokubo; T. Terashima; S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo), X, 1, 79-82, 1998, Peer-reviwed
International conference proceedings, English - Hall effect in the mixed state of In film
S. Okuma; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), X, 1, 93-96, 1998, Peer-reviwed
International conference proceedings, English - Superconductor-insulator transition in two-dimensional a-MoxSi1-x films
S. Okuma; T. Terashima; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), X, 1, 163-166, 1998, Peer-reviwed
International conference proceedings, English - Universal critical scaling of dc and ac complex resistivities in an indium film near the vortex-glass transition
S Okuma; N Kokubo
PHYSICAL REVIEW B, 56, 21, 14138-14142, Dec. 1997, Peer-reviwed
Scientific journal, English - Scaling behavior of the longitudinal and Hall resistivities in indium films
S Okuma; N Kokubo
PHYSICAL REVIEW B, 56, 1, 410-415, Jul. 1997, Peer-reviwed
Scientific journal, English - Scaling behavior of the longitudinal and Hall resistivities in indium films
S. Okuma; N. Kokubo
Physical Review B - Condensed Matter and Materials Physics, 56, 1, 410-415, 1997, Peer-reviwed
Scientific journal, English - Universal critical scaling of dc and ac complex resistivities in an indium film near the vortex-glass transition
S. Okuma; N. Kokubo
Physical Review B - Condensed Matter and Materials Physics, 56, 21, 14138-14142, 1997, Peer-reviwed
Scientific journal, English - Superconductor-insulator transition in uniformly disordered two-dimensional films
S. Okuma; T. Terashima; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), IX, 1, 191-194, 1997, Peer-reviwed
International conference proceedings, English - Critical scaling behavior in the ac impedance of indium films in magnetic fields
N. Kokubo; S. Okuma
Advances in Superconductivity (Springer-Verlag, Tokyo), IX, 1, 195-198, 1997, Peer-reviwed
International conference proceedings, English - Ac magnetic and mechanical response at the onset of superconductivity in magnetic fields
S. Okuma; H. Yoshida; T. Ito; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), IX, 1, 199-202, 1997, Peer-reviwed
International conference proceedings, English - UNUSUAL INSULATING PHASE AT LOW-TEMPERATURE IN THIN INDIUM FILMS
S OKUMA; N KOKUBO
PHYSICAL REVIEW B, 51, 21, 15415-15419, Jun. 1995, Peer-reviwed
Scientific journal, English - FIELD-INDUCED SUPERCONDUCTOR-INSULATOR TRANSITION AND GRAIN-SIZE IN THIN GRANULAR FILMS OF INDIUM
S OKUMA; N KOKUBO
SOLID STATE COMMUNICATIONS, 93, 12, 1019-1023, Mar. 1995, Peer-reviwed
Scientific journal, English - Scaling of the Hall resistance in the mixed state of indium films
S. Okuma; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), VII, 1, 113-116, 1995, Peer-reviwed
International conference proceedings, English - Distinct insulating phase at low temperature in thin superconducting films
S. Okuma; N. Kokubo
Advances in Superconductivity (Springer-Verlag, Tokyo), VII, 1, 117-120, 1995, Peer-reviwed
International conference proceedings, Japanese - Thickness dependence of the I-V characteristics in indium films
S. Okuma; K. Enya; H. Hirai; N. Kokubo; T. Arai
Advances in Superconductivity (Springer-Verlag, Tokyo), VII, 1, 121-124, 1995, Peer-reviwed
International conference proceedings, English - Power-law behavior of I-V characteristics and magnetoresistance in thin indium films
S. Okuma; N. Kokubo; K. Enya
Advances in Superconductivity (Springer-Verlag, Tokyo), VI, 1, 119-122, 1994, Peer-reviwed
International conference proceedings, English
MISC
- SQUID on tip made of a superconducting nitride film by a self-aligned deposition method using a reactive DC magnetron sputtering
N. Kokubo; B. Gerelkhuu
Lead, Jan. 2024, 電子通信情報学会超伝導エレクトロニクス研究会, Japanese, Invited, Technical report - 超伝導薄膜リングにおける磁束集束効果と渦糸捕捉
小久保伸人; 三石真里江; 岡安悟; 野島勉; 佐々木孝彦
2019, 日本物理学会講演概要集(CD-ROM), 74, 1, 2189-079X, 201902243569646786 - 走査SQUID顕微鏡で観測した微小超伝導体の渦糸・反渦糸状態
小久保伸人; 岡安悟; 野島勉; 佐々木孝彦
2018, 日本物理学会講演概要集(CD-ROM), 73, 1, 2189-079X, 201802283884815803 - アンチドットをもつ微小正方形アモルファス超伝導膜の磁束状態
北野恒平; 小久保伸人; 三石真里江; 岡安悟; 野島勉; 佐々木孝彦
2017, 日本物理学会講演概要集(CD-ROM), 72, 1, 2189-079X, 201702242555078877 - 微細孔をもつ微小な正方形超伝導体の磁束状態
小久保伸人; 北野恒平; 三石真里江; 岡安悟; 野島勉; 佐々木孝彦
2017, 日本物理学会講演概要集(CD-ROM), 72, 1, 2189-079X, 201702278090777393 - アンチドットをもつ微小アモルファス超伝導体の磁束状態
三石真里江; 小久保伸人; 岡安悟; 野島勉; 佐々木孝彦
2017, 日本物理学会講演概要集(CD-ROM), 72, 2, 2189-079X, 201702283836390444 - 幾何学的な構造を持つ微小超伝導体に閉じ込めた磁束状態
小久保 伸人; 岡安 悟; 野島 勉
東北大学極低温科学センター, Nov. 2015, 東北大学極低温科学センターだより, 16, 8-11, Japanese, 40020905717 - 幾何学的構造を持つ微小超伝導体に閉じ込めた量子渦配列
小久保伸人
アグネ技術センター, Aug. 2015, 固体物理, 594, 8, 437-446, Japanese, Peer-reviwed, Introduction other, 0454-4544, 40020568668, AN00092629 - 8pBB-1 Observation of vortex dynamics by pulse mode locking at low temperature
Ochi A.; Sohara N.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69, 2, 565-565, Japanese, 1342-8349, 110009874107, AA11439205 - 8pBB-9 Direct observation of vortices in triangles of amorphous MoGe superconducting films
Miyahara H.; Okayasu S.; Nojima T.; Kokubo N.
The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69, 2, 567-567, Japanese, 1342-8349, 110009874109, AA11439205 - 8pBB-3 Instability of vortex flow by increased velocity and its origin
Sohara N.; Ochi A.; Kaneko S.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 22 Aug. 2014, Meeting abstracts of the Physical Society of Japan, 69, 2, 565-565, Japanese, 1342-8349, 110009875920, AA11439205 - 27pCA-3 Velocity-induced rearrangement and instability of driven vortex lattices
Ochi A.; Nagatani K.; Sohara N.; Kokubo N.; Okuma S
The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69, 1, 790-790, Japanese, 1342-8349, 110009836409, AA11439205 - 27pCA-2 Observation of fast driven vortex-lattice flow by pulse measurements and effects of anisotropy
Sohara N.; Takahashi M.; Nagatani K.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 05 Mar. 2014, Meeting abstracts of the Physical Society of Japan, 69, 1, 790-790, Japanese, 1342-8349, 110009836408, AA11439205 - Instability and Rearrangement of Fast Driven Abrikosov Lattice
Sohara A.; Nagatani K.; Kokubo A.; Okuma S.
The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68, 2, 723-723, Japanese, 1342-8349, 110009755943, AA11439205 - 26pEM-1 Attractive force between vortices in fast driven vortex lattice II
Nagatani K.; Sohara N.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 26 Mar. 2013, Meeting abstracts of the Physical Society of Japan, 68, 1, 860-860, Japanese, 1342-8349, 110009645527, AA11439205 - 18aAF-1 Attractive force between vortices in fast driven vortex lattice
Nagatani K.; Shimamoto D.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 24 Aug. 2012, Meeting abstracts of the Physical Society of Japan, 67, 2, 718-718, Japanese, 1342-8349, 110009601128, AA11439205 - 24aBC-1 速度による渦糸格子方位の回転と微視的機構(24aBC 超伝導,領域6(金属,超低温,超伝導・密度波))
大熊 哲; 嶋本 大祐; 小久保 伸人
一般社団法人日本物理学会, 05 Mar. 2012, 日本物理学会講演概要集, 67, 1, 829-829, Japanese, 1342-8349, 110009567875, AA11439205 - 21aHC-1 Change in lattice orientation of driven vortex solid by flow velocity III
Shimamoto D.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 24 Aug. 2011, Meeting abstracts of the Physical Society of Japan, 66, 2, 796-796, Japanese, 1342-8349, 110008760161, AA11439205 - 25aEH-2 Change in lattice orientation of driven vortex solid by flow velocity II
Shimamoto D.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66, 1, 809-809, Japanese, 1342-8349, 110008715171, AA11439205 - 25aEH-3 Vortex states and dimensionality of amorphous Mo_xGe_<1-x> films
Sato H.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 03 Mar. 2011, Meeting abstracts of the Physical Society of Japan, 66, 1, 809-809, Japanese, 1342-8349, 110008715172, AA11439205 - 24aXB-9 Change in microscopic structure of rotated vortex-lattice rings II
Matsumura Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65, 2, 747-747, Japanese, 1342-8349, 110008099274, AA11439205 - 24aXB-8 Change in lattice orientation of driven vortex solid by flow velocity
Shimamoto D.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 18 Aug. 2010, Meeting abstracts of the Physical Society of Japan, 65, 2, 747-747, Japanese, 1342-8349, 110008099273, AA11439205 - 20aHX-8 Change in microscopic structure of rotated vortex-lattice rings
Matsumura Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65, 1, 813-813, Japanese, 1342-8349, 110007656825, AA11439205 - 20aHX-7 Dynamic quantum melting of vortex solid and flow states in vortex lattice II
Okuma S.; Imaizumi H.; Shimamoto D.; Kokubo N.
The Physical Society of Japan (JPS), 01 Mar. 2010, Meeting abstracts of the Physical Society of Japan, 65, 1, 813-813, Japanese, 1342-8349, 110007656824, AA11439205 - 26aYA-9 Rotated rings of vortex lattice III
Matsumura Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64, 2, 697-697, Japanese, 1342-8349, 110007498548, AA11439205 - 26aYA-7 Dynamic quantum melting of vortex solid and flow states of vortex lattice
Imaizumi H.; Matsumura Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 18 Aug. 2009, Meeting abstracts of the Physical Society of Japan, 64, 2, 697-697, Japanese, 1342-8349, 110007498546, AA11439205 - 28aYJ-1 Dynamic quantum melting of vortex solid III
Imaizumi H.; Matsumura Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 03 Mar. 2009, Meeting abstracts of the Physical Society of Japan, 64, 1, 776-776, Japanese, 1342-8349, 110007372627, AA11439205 - 超伝導渦の動的秩序化
大熊哲; 井上甚; 小久保伸人
アグネ技術センタ-, 2009, 固体物理, 515, 1, 1-15, Japanese, Peer-reviwed, Introduction other, 0454-4544, 40016447968, AN00092629 - 21pYE-4 Order-disorder transition in the vortex solid phase of amorphous Mo_xGe_<1-x> films II
Suzuki Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63, 2, 702-702, Japanese, 1342-8349, 110006985101, AA11439205 - 21pYE-7 Rotated rings of vortex lattice II
Yamazaki Y.; Inoue J.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 25 Aug. 2008, Meeting abstracts of the Physical Society of Japan, 63, 2, 703-703, Japanese, 1342-8349, 110006985104, AA11439205 - 24pTH-1 Mode-locking resonance nad broadband noise II
Inoue J.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63, 1, 768-768, Japanese, 1342-8349, 110007194807, AA11439205 - 24pTH-3 Dynamic quantum melting of vortex solid
Okuma S.; Suzuki K.; Suzuki Y.; Imaizumi H.; Inoue J.; Kokubo N.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63, 1, 769-769, Japanese, 1342-8349, 110007192119, AA11439205 - 24pTH-2 Order-disorder transition in the vortex solid phase of amorphous Mo_xGe_<1-x> films
Suzuki Y.; Kashiro K.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63, 1, 768-768, Japanese, 1342-8349, 110007192118, AA11439205 - 24pTH-5 Rotated rings of vortex lattice
Yamazaki Y.; Suzuki Y.; Inoue J.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 29 Feb. 2008, Meeting abstracts of the Physical Society of Japan, 63, 1, 769-769, Japanese, 1342-8349, 110007192120, AA11439205 - 21aXQ-10 Vortex dynamics in the vortex solid phase and influences of edges
Kashiro K.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62, 2, 803-803, Japanese, 1342-8349, 110007142100, AA11439205 - 21aXQ-9 Mode-locking resonance and broadband noise
Inoue J.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62, 2, 802-802, Japanese, 1342-8349, 110007142101, AA11439205 - 21aXQ-11 Dynamics of rotated vortex solid and size effects
Yamazaki Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 21 Aug. 2007, Meeting abstracts of the Physical Society of Japan, 62, 2, 803-803, Japanese, 1342-8349, 110007142099, AA11439205 - 18aRD-11 Vortex dynamics in the vortex solid phase of amorphous Mo_xGe_<1-x> films
Kashiro K.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62, 1, 766-766, Japanese, 1342-8349, 110007192977, AA11439205 - 18aRD-10 Mode locking of vortex flow and voltage noise II
Inoue J.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 28 Feb. 2007, Meeting abstracts of the Physical Society of Japan, 62, 1, 765-765, Japanese, 1342-8349, 110007192978, AA11439205 - 23aZA-14 Peak-effect of amorphous Mo_xGe_<1-x> films at low temperature
Kashiro K.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61, 2, 633-633, Japanese, 1342-8349, 110007179307, AA11439205 - 23aZA-8 Mode locking of vortex flow and voltage noise in amorphous Mo_xGe_<1-x> films
Inoue J.; Katagiri T.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 18 Aug. 2006, Meeting abstracts of the Physical Society of Japan, 61, 2, 631-631, Japanese, 1342-8349, 110007182525, AA11439205 - 26pWA-5 Study of substitution effect on Bi_2Sr_2Ca(Cu_<1-x>M_x)_2(M=Zn,Co,Ni)O_<8+δ> single crystals doped with magnetic and nonmagnetic impurities
Yamamoto T; Kakeya I; Kokubo N; Kadowaki K
The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60, 0, 585-585, Japanese, 1342-8349, 110004536344, AA11439205 - 19aYL-5 Observation of the vortex state in Nb thin film embedded ferromagnetic dot by decoration method
Sato H; Yamamoto T; Kokubo N; Kakeya I; Kadowaki K
The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60, 0, Japanese, 110004559353 - 19aYL-7 Observation of flux lines on Nb thin films prepared with various geometric patterns
Yamamoto T; Kakeya I; Kokubo N; Kadowaki K
The Physical Society of Japan, 2005, Meeting Abstracts of the Physical Society of Japan, 60, 0, Japanese, 110004559355 - 28aPS-51 Magnetic phase diagram of MgB_2 single crystal synthesized under the ambient pressureII
Yasuda J; Kakeya I; Kokubo N; Kadowaki K
The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59, 0, 567-567, Japanese, 1342-8349, 110002193571, AA11439205 - 14aRB-4 Vortex state of Bi_2Sr_2CaCu_2O_<8+δ> doped by magnetic impurities
Yamamoto T.; Kakeya I.; Kokubo N.; Kadowaki K.
The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59, 0, 517-517, Japanese, 1342-8349, 110002054232, AA11439205 - 14pRC-3 Magnetic properties of MgB_2 single crystal
Yasuda J.; Kakeya I.; Kokubo N.; Kadowaki K.
The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59, 0, 532-532, Japanese, 1342-8349, 110002054333, AA11439205 - 13aPS-17 Study on Josephson Vortex Flow Dynamics in Mesoscopic Intrinsic Junctions
Yamazaki T; Kakeya I; Iwase M; Yamamoto T; Kokubo N; Kadowaki K
The Physical Society of Japan, 2004, Meeting Abstracts of the Physical Society of Japan, 59, 0, Japanese, 110002053831 - Effective penetration depth in thin superconducting films obtained by a SQUID microscope
T. Nishio; S. Okayasu; J. Suzuki; N. Kokubo; K. Kadowaki
2004, FIMS/ITS-NS/CTC/PLASMA 2004 abstracts, II-117, English - Vortex Dynamics in Amorphous Mo_x_Si_1-x_ Films Detected by Voltage Noise
S.Okuma; N.Kokubo
2000, Phys. Rev. B, 61, 1, 671-677, 0163-1829, 80011427199 - 27aYM-9 Vortex Dynamics Observed by Voltage Noise Far below the KT Transition
Kamada M.; Kokubo N.; Okuma T.
The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54, 2, 722-722, Japanese, 1342-8349, 110001994089, AA11439205 - 27aYM-8 Complex ac Impedance Measurements and Vortex States in Disordered Superconductors
Arai M.; Imamoto Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 03 Sep. 1999, Meeting abstracts of the Physical Society of Japan, 54, 2, 721-721, Japanese, 1342-8349, 110001994088, AA11439205 - 28a-K-7 Vortex States in Disordered Superconductors Detected by AC Magnetic Response
Arai M.; Imamoto Y.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54, 1, 528-528, Japanese, 1342-8349, 110002223490, AA11439205 - 29p-A-6 The Effect of Magnetic Field on He adsorption on an amorphous Mo_xSi_<1-x> Film
Aoki H.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54, 1, 591-591, Japanese, 1342-8349, 110002224500, AA11439205 - 29p-B-4 Voltage Noise Measurements of Amorphous Mo_xSi_<1-x> films in Magnetic Fields II
Kokubo N.; Muto M.; Kamada M.; Okuma S.
The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54, 1, 594-594, Japanese, 1342-8349, 110002224546, AA11439205 - 29p-B-2 Vortex States and Dimensionality of Amorphous Mo_xSi_<1-x> Films at Very Low Temperatures
Shinozaki S.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 15 Mar. 1999, Meeting abstracts of the Physical Society of Japan, 54, 1, 593-593, Japanese, 1342-8349, 110002224538, AA11439205 - Vortex States and ac Magnetic Response of Amorphous Mo_xSi_<1-x> Films
ARAI M.; KOKUBO N.; OKUMA S.
The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53, 2, 698-698, Japanese, 1342-8349, 110001984117, AA11439205 - Voltage Noise Measurements of Amorphous Mo_xSi_<1-x> Films in Magnetic Fields
KOKUBO N.; MUTOU M.; SHINOZAKI S.; OKUMA S.
The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53, 2, 698-698, Japanese, 1342-8349, 110001984118, AA11439205 - Phase Diagram of the Two-Dimensional Superconductor-Insulator Transition at T=0
SHINOZAKI S.; KOKUBO N.; OKUMA S.
The Physical Society of Japan (JPS), 05 Sep. 1998, Meeting abstracts of the Physical Society of Japan, 53, 2, 684-684, Japanese, 1342-8349, 110001984063, AA11439205 - Voltage Noise Measurements of Superconducting Films in Magnetic Fields II
KOKUBO N.; OKUMA S.
The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53, 1, 585-585, Japanese, 1342-8349, 110002207521, AA11439205 - Anomalous Magnetoresistance near the Superconductor-Insulator Transition
OKUMA S.; TERASHIMA T.; KOKUBO N.
The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53, 1, 586-586, Japanese, 1342-8349, 110002207537, AA11439205 - AC Magnetic Response of Superconducting Films Close to the Vortex-Glass Transition II
ITO T.; ARAI M.; KOKUBO N.; OKUMA S.
The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53, 1, 588-588, Japanese, 1342-8349, 110002207572, AA11439205 - The KT Transition and Voltage Noise in Amorphous Mo_xSi_<1-x> Films
MUTOU M.; KOKUBO N.; SHINOZAKI S.; OKUMA S.
The Physical Society of Japan (JPS), 10 Mar. 1998, Meeting abstracts of the Physical Society of Japan, 53, 1, 588-588, Japanese, 1342-8349, 110002207567, AA11439205 - Anomalous Magnetoresistance near the Superconductor-Insulator Transition in Ultrathin Films of a-Mo┣D2x┫D2Si┣D21-x┫D2
S.Okuma T.Terashima; N.Kokubo
1998, Phys. Rev., 58, 5, 2816-2819, 0163-1829, 80010476345 - 7p-L-4 Wetting Transition of ^4He film on Alkari Metal Surface
Aoki H; Kokubo N; Okuma S
The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52, 2, 664-664, Japanese, 1342-8349, 110002063463, AA11439205 - 5a-K-3 Voltage Noise Measurements of Superconducting Films in Magnetic Fields
Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52, 2, 587-587, Japanese, 1342-8349, 110002062898, AA11439205 - 5a-K-4 AC Magnetic Response of Superconducting Films Close to the Vortex-Glass Transition
ITO T.; KOKUBO N.; OKUMA S.
The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52, 2, 587-587, Japanese, 1342-8349, 110002062900, AA11439205 - 5a-K-8 Superconductor-Insulator Transition in Amorphous Mo_xSi_<1-x> films III
Terashima T.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 16 Sep. 1997, Meeting abstracts of the Physical Society of Japan, 52, 2, 588-588, Japanese, 1342-8349, 110002062907, AA11439205 - 28p-Q-5 Voltage Noise Measurements of Indium Films in Magnetic Fields
Kokubo N; Okuma S
The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52, 1, 582-582, Japanese, 1342-8349, 110002136734, AA11439205 - 28p-Q-4 Superconductor-Insulator Transition in Amorphous Mo_xSi_<1-x> films II
Terashima T; Kokubo N; Okuma S
The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52, 1, 581-581, Japanese, 1342-8349, 110002136729, AA11439205 - 28p-Q-6 AC Magnetic Response of Indium Films Close to the Vortex-Grass Transition
ITO T; KOKUBO N; OKUMA S
The Physical Society of Japan (JPS), 17 Mar. 1997, Meeting abstracts of the Physical Society of Japan, 52, 1, 582-582, Japanese, 1342-8349, 110002136742, AA11439205 - 極低温下水晶振動子法による膜厚・吸着原子の測定
大熊哲; 小久保伸人
アグネ技術センタ-, 1997, 固体物理, 32, 2, 97-103, Japanese, Peer-reviwed, Introduction other, 0454-4544, 40001389541, AN00092629 - a.c.susceptibility measurement of superconducting films using mutual inductive method
Ito T.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996, 3, 506-506, Japanese, 110001986956, AN10453836 - Superconductor-Insulator Transition in Amorphous Mo_xSi_<1-x> films
Terashima T.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996, 3, 505-505, Japanese, 110001986954, AN10453836 - The Hall Effect in the Mixed State of Indium Films and Amorphous Mo_xSi_<1-x> Films
Okuma S.; Terashima T.; Kokubo N.
The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996, 3, 505-505, Japanese, 110001986953, AN10453836 - AC Impedance Measurements of Indium Films in Magnetic Fields II
Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 13 Sep. 1996, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1996, 3, 506-506, Japanese, 110001986955, AN10453836 - 3a-YK-13 AC Impedance Measurements of In Films in Magnetic Fields
Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 15 Mar. 1996, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 51, 3, 515-515, Japanese, 110009790889, AN10451127 - Tunneling Measurements Close to the SI Transition in 2D II
Arai T.; Kokubo N.; Okuma S.
The Physical Society of Japan (JPS), 12 Sep. 1995, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1995, 3, 356-356, Japanese, 110002057018, AN10453836 - Scaling of the Hall Resistance in the Mixed State of the Superconductors
Kokubo N; Okuma S
The Physical Society of Japan (JPS), 16 Mar. 1995, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 50, 3, 397-397, Japanese, 110002227412, AN10451127 - 2次元超伝導体における磁場印加超伝導絶縁体転移
小久保伸人
物性研究刊行会, 1995, 物性研究出版, 64, 3, 282-307, Japanese, Introduction other, 0525-2997, 110006437625, AN0021948X - 3p-YD-2 S-I Transition by Magnetic Field and the Hall Effect
Kokubo N; Arai T; Okuma S
The Physical Society of Japan (JPS), 16 Aug. 1994, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1994, 3, 303-303, Japanese, 110001990120, AN10453836 - 31a-YF-5 S-I Transition by Magnetic Field and the Hall Effect
Kokubo N; Okuma S
The Physical Society of Japan (JPS), 16 Mar. 1994, Abstracts of the meeting of the Physical Society of Japan. Annual meeting, 49, 3, 436-436, Japanese, 110002236350, AN10451127 - 13a-D-8 Superconductor-Insulator Transition in Quench-Condensed Indium Films II
Okum S.; Kokubo N.; Enya K.
The Physical Society of Japan (JPS), 20 Sep. 1993, Abstracts of the meeting of the Physical Society of Japan. Sectional meeting, 1993, 3, 392-392, Japanese, 110001997051, AN10453836
Books and other publications
- 超伝導磁束状態の物理
小久保伸人
Textbook, Japanese, Contributor, 3.3.2 幾何学的に閉じ込められた磁束の配列, 裳華房, 05 Apr. 2017, 9784785329228 - The Oxford Handbook of Small Superconductors
Nobuhito Kokubo; Satoru Okayasu; Kazuo Kadowaki
Scholarly book, English, Contributor, Chapter 3: MULTI-VORTEX STATES IN MESOSCOPIC SUPERCONDUCTORS, Oxford University Press, Jan. 2017, 9780198738169
Lectures, oral presentations, etc.
- SQUID on tip made of a superconducting nitride film by a self-aligned deposition method using a reactive DC magnetron sputtering
小久保 伸人
Invited oral presentation, Japanese, 電子情報通信学会超伝導エレクトロニクス研究会, Invited
14 Jan. 2025
14 Jan. 2025- 14 Jan. 2025 - 広い温度範囲で利用できるニオブチタン窒化膜を用いた先端型ナノSQUIDの開発
小久保伸人
Japanese, 第29回渦糸物理ワークショップ
19 Dec. 2023 - 窒化ニオブチタン膜を用いた先端型ナノ SQUID の輸送特性
小久保伸人
Poster presentation, Japanese, 日本物理学会第78回年次大会
18 Sep. 2023 - 針状ガラスの先端を用いたNV中心ダイヤモンド磁気センサの作製
マンカケイ; 小久保伸人
Poster presentation, Japanese, 第70回応用物理学会春季学術講演会
16 Mar. 2023 - ガラス針先端のナノSQUIDを探針とした走査型熱・磁気顕微鏡の開発
磯部陽州; 上原諒; 小久保伸人; 島田宏
Poster presentation, Japanese, 第70回応用物理学会春季学術講演会
16 Mar. 2023 - 針状ガラス管先端を利用した超伝導センサの開発：超伝導熱・磁気顕微鏡を目指して
小久保伸人
Japanese, ナノトライボロジー研究センター第４回 シンポジウム
08 Mar. 2023 - Observation of vortex trapping and expulsion in superconducting rings of amorphous MoGe thin films
N. Kokubo; S. Okayasu; T. Nojima
Poster presentation, English, 32th International Symposium on Superconductivity, Kyoto, Miyako Messe, International conference
03 Dec. 2020 - 微小超伝導体の渦糸トラップとアンチドットクラスタの磁束状態
小久保伸人; 岡安悟; 野島勉
Oral presentation, Japanese, 第27回渦糸物理ワークショップ, ボルテックスフォーラム, 京都大学理学研究科セミナーハウス, Domestic conference
18 Dec. 2019 - Observation of vortex trapping and expulsion in superconducting rings of amorphous MoGe thin films
N. Kokubo; S. Okayasu; T. Nojima
Poster presentation, English, 32th International Symposium on Superconductivity, Kyoto, Miyako Messe, International conference
03 Dec. 2019 - 超伝導熱・磁気顕微鏡の開発を目指して
小久保伸人
Oral presentation, Japanese, ワークショップ「ナノ構造超伝導体における渦糸状態, 大阪府立大学 加藤 勝, 大阪府立大学
02 Jun. 2019 - 超伝導渦糸系のデピ二ングとナノプローブ顕微鏡の開発
小久保伸人
Oral presentation, Japanese, ナノカーボン研究部門2018年度成果報告会 & 電気通信大学ナノトライボロジー研究センター合同研究会, Domestic conference
01 Mar. 2019 - メソズコピック超伝導チャネルに閉じ込めた渦糸ダイナミクス
小久保伸人; R. Besseling; P. H. Kes
Oral presentation, Japanese, 電通大-理科大合同研究会, 電気通信大学ナノトラポロジー研究センター第一回シンポジウム「表面・界面の科学と摩擦」, 電気通信大学, Domestic conference
30 Sep. 2017 - Manipulation of Fluxon States in Microstructured Superconducting Thin Films
Nobuhito Kokubo; Satoru Okayasu; Tsutomu Nojima; Takahiko Sasaki
Poster presentation, English, 10 th international conference on vortex matter in nanostructured superconductors (Vortex X), KU Leuven, Rhodes, Greece, International conference
13 Sep. 2017 - Observation of flux states and interstitial vortices in perforated mesoscopic squares of amorphous superconducting films
M Mitsuishi; K. Kitano; N. Kokubo; S. Okayasu; T. Nojima; T. Sasaki
Poster presentation, English, The 28th International Conference on Low Temperature Physics, Gothenburg, Sweden, http://www.lt28.se/, International conference
10 Aug. 2017 - Flux-flow instability in cleaved thin films of 2H-NbSe2 single crystals
J. Yoshida; H.Ando; N. Kokubo
Poster presentation, English, The 28th International Conference on Low Temperature Physics, Gothenburg, Sweden, http://www.lt28.se/, International conference
10 Aug. 2017 - 小さな超伝導体に閉じ込めた磁束状態の可視化と制御
小久保伸人; 岡安悟; 野島勉; 佐々木孝彦
Invited oral presentation, Japanese, 電通大-理科大合同研究会, ナノトライボロジー研究ステーション, 電気通信大学, Domestic conference
08 Mar. 2017 - Manipulation of Magnetic Flux States in Superconducting Squares with Artificial Pinning Sites
Kohei Kitano; Nobuhito Kokubo; Satoru Okayasu; Tsutomu Nojima; Takahiko Sasaki
Poster presentation, English, 28th International Symposium on Superconductivity, Tokyo, International conference
14 Dec. 2016 - 微細孔をもつ正方形状の微小超伝導体に閉じ込めた磁束状態
小久保伸人; 北野恒平; 望月麟太郎; 岡安悟; 野島勉; 佐々木孝彦
Oral presentation, Japanese, 第24回渦糸物理国内会議, 秋田, Domestic conference
28 Nov. 2016 - 走査SQUID磁気顕微鏡で観測した微小超伝導体の渦糸状態と人工ピン止め
北野恒平; 岡安悟; 野島勉; 佐々木孝彦; 小久保伸人
Poster presentation, Japanese, 日本物理学会2016年秋季大会, 金沢, Domestic conference
15 Sep. 2016 - 人工ピン止めを導入した正方形状の微小超伝導体における渦糸状態
小久保伸人; 北野恒平; 岡安悟; 野島勉; 佐々木孝彦
Oral presentation, Japanese, 日本物理学会2016年秋季大会, 金沢, Domestic conference
14 Sep. 2016 - 異方的渦糸格子の動的融解III
井上俊規; 越智亜玖利; 河村泰樹; 家永紘一郎; 金子真一; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会2016年秋季大会, 金沢, Domestic conference
13 Sep. 2016 - NbSe2超伝導体における特異な電流電圧特性と渦糸フローの不安定化
小久保伸人; 宮原大; 岡安悟; 野島勉; 佐々木孝彦
Oral presentation, Japanese, 日本物理学会第71回年次大会, 日本物理学会, 東北学院大学, Domestic conference
21 Mar. 2016 - 異方的渦糸格子の動的融解II
井上俊規; 越智亜玖利; 河村泰樹; 家永紘一郎; 金子真一; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会第71回年次大会, 日本物理学会, 東北学院大学, Domestic conference
19 Mar. 2016 - 多重渦状態と殻構造
小久保伸人; 宮原大; 岡安悟; 野島勉
Oral presentation, Japanese, 第23回渦糸物理国内会議, 福岡, Domestic conference
08 Dec. 2015 - Unusual I-V Characteristics and Flux Flow Instability in 2H-NbSe2 Superconductors
Junichiro Yoshida; Nobuhito Kokubo
Poster presentation, English, 28th International Symposium on Superconductivity, ISTEC, Tokyo, International conference
18 Nov. 2015 - Observation of Multi-Vortex States Confined in Mesoscopic Superconductors of Different Geometric Shapes
Nobuhito Kokubo; Satoru Okayasu; Tsutomu Nojima; Takahiko Sasaki
Oral presentation, English, 28th International Symposium on Superconductivity, ISTEC, Tokyo, International conference
18 Nov. 2015 - 周期的微細構造をもつアモルファス超伝導膜に誘起された渦糸状態
北野恒平; 望月麟太郎; 小久保伸人
Poster presentation, Japanese, 日本物理学会2015年秋季大会, 日本物理学会, 関西大学, Domestic conference
19 Sep. 2015 - アンチドット構造をもつ超伝導二層膜に閉じ込めた渦糸状態と電流制御
望月麟太郎; 岡安悟; 野島勉; 佐々木孝彦; 小久保伸人
Poster presentation, Japanese, 日本物理学会2015年秋季大会, 日本物理学会, 関西大学, Domestic conference
19 Sep. 2015 - NbSe2超伝導体における特異な電流電圧特性と渦糸フローの不安定化
吉田純一朗; 小久保伸人
Oral presentation, Japanese, 日本物理学会2015年秋季大会, 日本物理学会, 関西大学, Domestic conference
19 Sep. 2015 - アモルファスNbGe超伝導細線における輸送特性とゆらぎ
佐藤能英瑠; 西脇裕人; 小久保伸人
Oral presentation, Japanese, 第70回日本物理学会年次大会, 日本物理学会, 早稲田大学, Domestic conference
22 Mar. 2015 - 極低温下のパルスモードロック共鳴法による渦糸ダイナミクスの観測II
越智亜玖利; 曽原直也; 小久保伸人; 大熊哲
Oral presentation, Japanese, 第70回日本物理学会年次大会, 日本物理学会, 早稲田大学, Domestic conference
21 Mar. 2015 - Vortex States in Mesoscopic Superconductors
N. Kokubo
Oral presentation, English, Second MIPT-UEC Joint Workshop on Optical Science, University of Electro-Comunications, Tokyo, International conference
20 Oct. 2014 - 超伝導窒化膜の渦糸フローチャネルに閉じ込めた渦糸格子の方位II
山崎史麿; 佐藤能英瑠; 宮原大; 小久保伸人
Oral presentation, Japanese, 日本物理学会2014年秋季大会, 日本物理学会, 中部大学, Domestic conference
08 Sep. 2014 - 三角形状に加工したアモルファスMoGe超伝導膜における量子渦配列の直接観測
宮原大; 岡安悟; 野島勉; 小久保伸人
Oral presentation, Japanese, 日本物理学会2014年秋季大会, 日本物理学会, 中部大学, Domestic conference
08 Sep. 2014 - 極低温下のパルスモードロック共鳴法による渦糸ダイナミクスの観測
越智亜玖利; 曽原直也; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会2014年秋季大会, 日本物理学会, 中部大学, Domestic conference
08 Sep. 2014 - 速度増大による渦糸フローの不安定化とその起源
曽原直也; 越智亜玖利; 金子真一; 小久保伸人
Oral presentation, Japanese, 日本物理学会2014年秋季大会, 日本物理学会, 中部大学, Domestic conference
08 Sep. 2014 - 渦糸フローチャネルで駆動した渦糸格子の方位とサイズ効果
山崎史麿; 佐藤能英瑠; 宮原大; 小久保伸人
Oral presentation, Japanese, 第22 回渦糸物理国内会議, ハイランドふらの, Domestic conference
12 Jul. 2014 - 微小超伝導体の幾何学的形状と量子渦配列
小久保伸人
Oral presentation, Japanese, 第22 回渦糸物理国内会議, ハイランドふらの, Domestic conference
11 Jul. 2014 - 幾何学的に閉じ込められた超伝導量子渦
小久保伸人
Oral presentation, Japanese, 物性研究所短期研究会「スーパーマターが拓く新量子現象」, Invited, Domestic conference
19 Apr. 2014 - 超伝導窒化膜の渦糸フローチャネルに閉じ込めた渦糸格子の方位
山崎史麿; 佐藤能英瑠; 宮原大; 小久保伸人
Oral presentation, Japanese, 日本物理学会第69回年次大会, 日本物理学会, 平塚, Domestic conference
27 Mar. 2014 - パルス法による高速渦糸格子フローの観測と異方性の効果
曽原直也; 長谷圭祐; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会第69回年次大会, 日本物理学会, 平塚, Domestic conference
27 Mar. 2014 - 速度増大による渦糸格子の再配列と不安定化
越智亜玖利; 長谷圭祐; 曽原直也; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会第69回年次大会, 日本物理学会, 平塚, Domestic conference
27 Mar. 2014 - 三角形状の微小超伝導体における量子渦配列
小久保伸人
Oral presentation, Japanese, 金研共同利用ワークショップ「超伝導体おける渦糸状態の物理と応用(2013)」（第21回渦糸物理国内会議）, 仙台, Domestic conference
14 Dec. 2013 - 走査SQUID顕微鏡で見たアモルファス微小超伝導体の磁束状態
小久保 伸人
Invited oral presentation, Japanese, 日本物理学会 2013年秋季大会, Invited, 日本物理学会, 徳島大学, Domestic conference
27 Sep. 2013 - 高速域における渦糸格子フローの不安定性と再配列
曽原直也; 長谷圭祐; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会 2013年秋季大会, Domestic conference
27 Sep. 2013 - 電通大「チーム教育（共有教育）」eラーニングでの電磁場概念理解度
阿部浩二; 金長正彦; 小久保伸人; 鈴木勝; 高田亨; 中村仁; 伏屋雄紀
Oral presentation, Japanese, 日本物理学会2013年秋季大会, 日本物理学会, 徳島大学
27 Sep. 2013 - 幾何学的に閉じ込められた磁束量子渦状態II
小久保伸人; 宮原大; 岡安悟; 多持洋孝; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013 - 高速駆動した渦糸格子における渦糸間引力II
長谷圭祐; 曽原直也; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013 - 正方形状の微小超伝導体における渦糸配列
小久保伸人
Oral presentation, Japanese, 第20回渦糸物理国内会議
Dec. 2012 - 高速駆動した渦糸格子における渦糸間引力
長谷圭祐; 嶋本大祐; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2012年秋季大会
Sep. 2012 - 幾何学的に閉じ込められた磁束量子渦状態
小久保伸人; 岡安悟; 多持洋孝; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2012年秋季大会
Sep. 2012 - a-NbGe超伝導膜の傾斜磁場下における磁束格子フローの格子方位回転III
小久保伸人; 吉村哲也; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第67回年次大会
Mar. 2012 - Scanning SQUID Microscope Study of Vortex Configurations in Amorphous Superconducting Dots
N. Kokubo
Invited oral presentation, English, Pathbreaking Phase Sciences in Superconductivity 2012, Osaka, International conference
Jan. 2012 - In-Zn-Ga-O 3 次元膜の磁気抵抗、電子局在と熱処理効果II
日高和也; 江崎翔平; 牧瀬圭正; 山田和正; 小久保伸人; 浅野貴行; 篠崎文重; 苫井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,第117回九州支部例会
Dec. 2011 - 透明導伝膜In-Sn-Zn-O の輸送特性
鈴川槙一郎; 江崎翔平; 日高和也; 牧瀬圭正; 山田和正; 小久保伸人; 浅野貴行; 篠崎文重; 苫井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,第117回九州支部例会
Dec. 2011 - 超伝導細線の温度‐抵抗特性
上原広大; 江崎翔平; 多持洋孝; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第117回九州支部例会
Dec. 2011 - 駆動状態における磁束格子の方位と試料端の形状効果
多持洋孝; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第117回九州支部例会
Dec. 2011 - 駆動速度による渦糸固体の格子方位変化III
嶋本大祐; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2011年秋季大会
Sep. 2011 - 駆動された磁束格子の方位と試料端の形状効果
多持洋孝; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2011年秋季大会
Sep. 2011 - Reorientation of a moving vortex lattice in oblique magnetic fields
N. Kokubo
Invited oral presentation, English, The 13th International Workshop on Vortex Matter in Superconductors, Chicago, United States of America, International conference
Aug. 2011 - サブＧＨzで捉えた磁束格子フローのモードロック共鳴と形状効果
多持洋孝; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第66回年次大会
Mar. 2011 - 駆動速度による渦糸固体の格子方位変化II
嶋本大祐; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第66回年次大会
Mar. 2011 - アモルファスMoxGe1-x膜の渦糸状態と次元性
佐藤大樹; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第66回年次大会
Mar. 2011 - a-NbGe超伝導膜の傾斜磁場下における磁束格子フローの格子方位回転III
小久保伸人; 吉村哲也; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第64回年次大会
Mar. 2011 - 超伝導量子渦の幾何学的閉じ込めとピン止め効果
小久保伸人
Invited oral presentation, Japanese, ワークショップ「ナノ構造超伝導体における渦糸状態」
Jan. 2011 - (In2O3)1−x(ZnO)x 膜の超伝導特性III
高田聡; 篠崎文重; 山田和正; 小久保伸人; 牧瀬圭正; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - アモルファス超伝導膜の傾斜磁場下における磁束格子フローの格子方位回転II
吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部
Dec. 2010 - 超伝導/微小強磁性複合構造における臨界電流と磁束フロー
多持洋孝; 吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - In-Zn-Ga-O ３次元膜の磁気抵抗, 電子局在と熱処理効果
江崎翔平; 牧瀬圭正; 山田和正; 小久保伸人; 篠崎文重; 笘井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - (In2O3)1−x(ZnO)x 膜の超伝導特性III
高田聡; 篠崎文重; 山田和正; 小久保伸人; 牧瀬圭正; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - FIB 法により作成された擬一次元In/Mo 超伝導体の輸送特性
田崎茂; 江崎翔平; 牧瀬圭正; 山田和正; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - アモルファスNbGe 超伝導膜における臨界電流と形状効果
尾堂智隆; 多持洋孝; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - a-NbGe 超伝導膜における磁束格子フローと磁気相図
下岡孝明; 吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - 2,3 次元In2O3-ZnO 膜の磁気抵抗に及ぼす熱処理効果
日高和也; 江崎翔平; 牧瀬圭正; 山田和正; 小久保伸人; 篠崎文重; 苫井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - 導電性高分子ポリアニリン膜の抵抗率・キャリア数の温度依存性
滝川陽介; 山田和正; 小久保伸人; 篠崎文重; 板東徹; 黒田憲寛; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - 延伸された高分子ポリアニリン膜の電気輸送特性
源島久志; 滝川陽介; 山田和正; 小久保伸人; 篠崎文重; 安田剛; 坂東徹; 黒田憲寛; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - 導電性高分子膜におけるゼーベック係数のドーパント量依存性
成清敬史; 滝川陽介; 山田和正; 小久保伸人; 篠崎文重; 坂東徹; 黒田憲寛; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - 多結晶酸化物半導体In2O3-ZnO の有効ホール移動度と結晶粒界
松本直樹; 山田和正; 小久保伸人; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第116回日本物理学会九州支部例会
Dec. 2010 - 走査型SQUID顕微鏡で直接観測した微小超伝導体の磁束配列
小久保伸人; 岡安悟; 神田晶申; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010 - 超伝導体/微小強磁性複合構造における磁束フロー
多持洋考; 吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010 - a-NbGe超伝導膜の傾斜磁場下における磁束格子フローの格子方位回転II
吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010 - 駆動速度による渦糸固体の格子方位変化
嶋本大祐; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010 - 回転駆動された渦糸格子リングの微視的構造変化II
松村有夏; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010 - SQUID 顕微鏡で直接観測した微小超伝導体の磁束配列
小久保伸人
Invited oral presentation, Japanese, 日本物理学会第65回年次大会(シンポジウム)
Mar. 2010 - アモルファス超伝導体/微小強磁性複合構造における磁束フローチャネル
多持洋考; 吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第65回年次大会
Mar. 2010 - a-NbGe超伝導膜の傾斜磁場下における磁束格子フローの格子方位回転
吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第65回年次大会
Mar. 2010 - 渦糸固体の動的量子融解と格子のフロー状態II
大熊哲; 今泉広基; 嶋本大祐; 小久保伸人
Oral presentation, Japanese, 日本物理学会,第65回年次大会
Mar. 2010 - 回転駆動された渦糸格子リングの微視的構造変化
松村有夏; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第65回年次大会
Mar. 2010 - (In2O3)1−x(ZnO)x 膜の超伝導特性II
高田聡; 山田和正; 篠崎文重; 小久保伸人; 牧瀬圭正; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - SiO2 基板上In/Ge 薄膜の超伝導特性
田崎茂; 松原洋祐; 牧瀬圭正; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - (In2O3)1−x(ZnO)x 膜の超伝導特性II
高田聡; 山田和正; 篠崎文重; 小久保伸人; 牧瀬圭正; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - 簡易温度可変インサートの作製とFeSe 系超伝導体のR-T 特性
村上里奈; 多持洋孝; 吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - FIB 加工により作成したIn/Mo 細線の超伝導特性
松原洋祐; 田崎茂; 牧瀬圭正; 山田和正; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - アモルファス超伝導体/微小強磁性複合構造における磁束フローと臨界電流
多持洋考; 吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 第115回日本物理学会九州支部例会
Dec. 2009 - アモルファス超伝導膜の傾斜磁場下における磁束格子フローの格子方位回転
吉村哲也; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - 導電性高分子ポリアニリン膜のホール効果・ゼーベック効果
滝川陽介; 山田和正; 小久保伸人; 篠崎文重; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,第115回日本物理学会九州支部例会
Dec. 2009 - 傾斜磁場下における磁束格子フローの格子回転
小久保伸人
Oral presentation, Japanese, 第１７回磁束線物理国内会議,第１７回磁束線物理国内会議
Dec. 2009 - アモルファスNbGe膜におけるモードロック共鳴
小久保伸人; 吉村哲也; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Dec. 2009 - 低キャリア多結晶(In2O3)1−x(ZnO)x膜の超伝導III
高田聡; 山口高史; 山田和正; 篠崎文重; 小久保伸人; 牧瀬圭正; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009 - Direct Observation of Vortex States in Amorphous MoGe Disks by Scanning SQUID Microscopy
N. Kokubo; S. Okayasu; A. Kanda; B. Shinozaki
Invited oral presentation, English, The 12th International Workshop on Vortex Matter in Superconductors, Yamanashi, International conference
Sep. 2009 - 走査型SQUID顕微鏡で直接観測したアモルファスMoGe円板の磁束状態
小久保伸人; 岡安悟; 神田晶申; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009 - 渦糸固体の動的量子融解と格子のフロー状態
今泉広基; 松村有夏; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009 - 回転駆動された渦糸格子リングIII
松村有夏; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009 - 低キャリア多結晶(In2O3)1−x(ZnO)x膜の超伝導III
高田聡; 山口高史; 山田和正; 篠崎文重; 小久保伸人; 牧瀬圭正; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009 - 低次元(1D or 2D)In/Moの超伝導特性
松原洋祐; 田崎茂; 牧瀬圭正; 山田和正; 小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009 - Periodic spacing and lattice orientations of driven vortex matter in amorphous MoGe films detected by mode locking techniques
N. Kokubo; T. Nishizaki; B. Shinizaki; P. H. Kes
Invited oral presentation, English, Joint JSPS-ESF International Conference on Nanoscience and Engineering in Superconductivity, Ibaraki, International conference
Mar. 2009 - モードロック共鳴による磁束格子フローの格子方位と交流駆動依存性
小久保伸人; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第64回年次大会
Mar. 2009 - 渦糸固体の動的量子融解III
今泉広基; 松村有夏; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第64回年次大会
Mar. 2009 - polycrystalline In2O3-ZnO膜のEELS観察と輸送特性
牧瀬圭正; 三石和貴; 古屋一夫; 山口高史; 高田聡; 小倉俊助; 小久保伸人; 山田和正; 篠崎文重; 笘井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,第64回年次大会
Mar. 2009 - In・Sb/Mo膜の伝導特性
小早川優介; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第64回年次大会
Mar. 2009 - (In2O3)1−x(ZnO)x膜の超伝導特性
高田聡; 山口高史; 小倉俊介; 小久保伸人; 山田和正; 篠崎文重; 牧瀬圭正; 寺井恒太; 苫井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,114回日本物理学会九州支部例会
Dec. 2008 - 駆動された渦糸格子の格子方位
小久保伸人; 西嵜照和; 篠崎文重; P. H. Kes
Oral presentation, Japanese, 第16回渦糸物理国内会議,第16回渦糸物理国内会議
Dec. 2008 - アモルファス膜における秩序―無秩序転移と動的量子融解
大熊哲; 今泉広基; 鈴木啓久; 小久保伸人
Oral presentation, Japanese, 第16回渦糸物理国内会議,第16回渦糸物理国内会議
Dec. 2008 - コルビノディスク内で回転駆動された渦糸格子リング
山崎祐介; 小久保伸人; 大熊哲
Oral presentation, Japanese, 第16回渦糸物理国内会議,第16回渦糸物理国内会議
Dec. 2008 - 磁束格子フローの格子方位と交流駆動
小久保伸人; 篠崎文重; P. H. Kes
Oral presentation, Japanese, 日本物理学会九州支部,114回日本物理学会九州支部例会
Dec. 2008 - グラファイトの磁気抵抗2
小倉俊介; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,114回日本物理学会九州支部例会
Dec. 2008 - In・Sb/Mo 膜の伝導特性
小早川優介; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,114回日本物理学会九州支部例会
Dec. 2008 - (In2O3)1－x(ZnO)x膜の熱処理効果と輸送特性
山口高史; 高田聡; 小倉俊介; 小久保伸人; 山田和正; 篠崎文重; 牧瀬圭正; 寺井恒太; 苫井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,114回日本物理学会九州支部例会
Dec. 2008 - (In2O3)1−x(ZnO)x膜の超伝導特性
高田聡; 山口高史; 小倉俊介; 小久保伸人; 山田和正; 篠崎文重; 牧瀬圭正; 寺井恒太; 苫井重和; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会九州支部,114回日本物理学会九州支部例会
Dec. 2008 - 低キャリア多結晶(In2O3)1−x(ZnO)x膜の超伝導 II
山口高史; 高田聡; 小倉俊助; 小久保伸人; 牧瀬圭正; 山田和正; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - モードロック共鳴と磁束格子運動の結晶方位III
小久保伸人; 西嵜照和; 篠崎文重; P. H. Kes
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - 低キャリア多結晶(In2O3)1−x(ZnO)x膜の超伝導 II
山口高史; 高田聡; 小倉俊助; 小久保伸人; 牧瀬圭正; 山田和正; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - InO-ZnO膜の微細構造と輸送特性
牧瀬圭正; 三石和貴; 古屋一夫; 山口高史; 高田聡; 小倉俊助; 小久保伸人; 山田和正; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - 理系新入生の物理基礎学力変化
武田信一; 篠崎文重; 小久保伸人; 藤井新一郎; 藤原智子
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - モードロック共鳴と広帯域ノイズIII
井上甚; 今泉広基; 市村拓也; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - アモルファスMoxGe1-x膜渦糸固体相における秩序－無秩序転移II
鈴木啓久; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - 渦糸固体の動的量子融解II
今泉広基; 鈴木啓久; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - 回転駆動された渦糸格子リングII
山崎祐介; 井上甚; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008 - InO-ZnO薄膜の超伝導特性と微細構造
牧瀬圭正; 三石和貴; 古屋一夫; 山口高史; 高田聡; 小倉俊助; 篠崎文重; 小久保伸人; 矢野公規; 中村浩昭; 山田和正
Oral presentation, Japanese, 応用物理学会,第69回応用物理学会学術講演会
Sep. 2008 - 高抵抗In2O3-ZnO微結晶膜のホール効果測定
山田和正; 山口高史; 小久保伸人; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 応用物理学会,第69回応用物理学会学術講演会
Sep. 2008 - Hall Effect and Fluctuations in Amorphous Nb3Ge Films
N. Kokubo; J. Aarts; P. H. Kes
Invited oral presentation, English, The Joint Vortex-Physics and ESF-Vortex Matter Workshop, Lunteren, Netherlands, International conference
Aug. 2008 - 低キャリア多結晶(In2O3)1−x(ZnO)x膜の超伝導
高田聡; 山口高史; 小久保伸人; 牧瀬圭正; 山田和正; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - Indium Zinc Oxideの光伝導
山田和正; 山口高史; 小久保伸人; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 応用物理学関連連合,第55回応用物理学関連連合講演会
Mar. 2008 - モードロック共鳴と磁束格子運動の結晶方位II
小久保伸人; 西嵜照和; 篠崎文重; P. H. Kes
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - 低キャリア多結晶(In2O3)1−x(ZnO)x膜の超伝導
高田聡; 山口高史; 小久保伸人; 牧瀬圭正; 山田和正; 篠崎文重; 矢野公規; 中村浩昭
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - Ge/In多層膜における超伝導・絶縁体相の輸送特性
谷岡肇; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - モードロック共鳴と広帯域ノイズII
井上甚; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - アモルファスMoxGe1-x膜渦糸固体相における秩序－無秩序転移
鈴木啓久; 神代賢一; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - 渦糸固体の動的量子融解
大熊哲; 鈴木賢一; 井上甚; 今泉広基; 小久保伸人
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - 回転駆動された渦糸格子リング
山崎祐介; 鈴木啓久; 井上甚; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第63回年次大会
Mar. 2008 - Lattice orientations of driven vortex matter detected by mode locking techniques
N. Kokubo; T. Nishizaki; B. Shinizaki; P. H. Kes
Invited oral presentation, English, The 4th CREST Nano-Virtual-Labs Joint Workshop on Superconductivity : Critical Current (NVLS2007-CC), Kitakyushu, International conference
Dec. 2007 - モードロック共鳴と磁束格子運動の結晶方位
小久保伸人; 西嵜照和; 篠崎文重; P. H. Kes
Oral presentation, Japanese, 日本物理学会九州支部,113回日本物理学会九州支部例会
Dec. 2007 - Ge/In 多層膜の超伝導特性
谷岡肇; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,113回日本物理学会九州支部例会
Dec. 2007 - In・Sb/Mo 膜の超伝導特性
小早川優介; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,113回日本物理学会九州支部例会
Dec. 2007 - 低キャリアIn2O3-ZnO 膜の輸送特性
篠崎文重; 船木誠; 牧瀬圭正; 山口高志; 小久保伸人; 山田和正
Oral presentation, Japanese, 日本物理学会九州支部,113回日本物理学会九州支部例会
Dec. 2007 - グラファイトの磁気抵抗
小倉俊介; 小久保伸人; 山田和正; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,113回日本物理学会九州支部例会
Dec. 2007 - Mode locking and vortex dynamics in mesoscopic flow channels
N. Kokubo
Invited oral presentation, English, 2nd International Autumn Seminar on Nanoscience and Engineering in Superconductivity for Young Scientists, Tochigi, International conference
Nov. 2007 - モードロック共鳴による磁束格子フローの結晶方位
小久保伸人
Invited oral presentation, Japanese, 東北大学金属材料研究所ワークショップ“ナノ構造超伝導体とその応用”
Nov. 2007 - Mode locking and lattice orientations of vortex matter in amorphous MoGe films
N. Kokubo; B. Shinozaki; P.H. Kes
Invited oral presentation, English, Joint JSPS and ESF Conference on Vortex Matter in Nanostructured Superconductors (Vortex V), Rhodes, Greece, International conference
Sep. 2007 - アモルファスMoGe膜における駆動された磁束格子の結晶方位転移
小久保伸人; 篠崎文重; P. H. Kes
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007 - モードロック共鳴と広帯域ノイズ
井上甚; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007 - 渦糸固体相における渦糸ダイナミクスとエッジの影響
神代賢一; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007 - 回転駆動させた渦糸固体のダイナミクスとサイズ効果
山崎祐介; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007 - 超伝導－絶縁体転移近傍でのアモルファスGa超薄膜の電気輸送特性
牧瀬圭正; 小倉俊助; 谷岡肇; 小久保伸人; 篠崎文重; 川口尚
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007 - 新指導要領による入学生の変化と物理教育の状況について
武田信一; 篠崎文重; 吉田英智; 小久保伸人
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007 - 平成17 年度～平成19 年度九州大学・理系入学生の物理基礎学力調査
篠崎文重; 武田信一; 吉田英智; 小久保伸人
Oral presentation, Japanese, 九州地区一般教育協議会,九州地区一般教育協議会
Sep. 2007 - アモルファスＭｏＧｅ膜における磁束格子のモードロック共鳴と動的秩序化
小久保伸人; 門脇和男
Oral presentation, Japanese, 第３回「超伝導ナノサイエンスと応用」研究会
Mar. 2007 - 金属/グラファイトの超伝導
小久保伸人; 高本信太郎; 牧瀬圭正; 篠崎文重
Oral presentation, Japanese, 日本物理学会,2007年春季大会
Mar. 2007 - 磁束フローチャネルにおけるつり合い効果と動的フロー構造
小久保伸人; R. Besseling; P. H. Kes
Oral presentation, Japanese, 日本物理学会,2007年春季大会
Mar. 2007 - モードロックされた渦糸フローと電圧ノイズ II
井上甚; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2007年春季大会
Mar. 2007 - アモルファスMoxGe1-x膜の渦糸固体相における渦糸ダイナミクス
神代賢一; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2007年春季大会
Mar. 2007 - 金属/グラファイトの超伝導
小久保伸人; 高本信太郎; 篠崎文重
Oral presentation, Japanese, 日本物理学会九州支部,第112回日本物理学会九州支部例会
Dec. 2006 - 磁束フローチャネルにおける動的スリップ転移
小久保伸人; T. G. Sorop; R. Besseling; P. H. Kes
Oral presentation, Japanese, 日本物理学会,2006年秋季大会
Sep. 2006 - モードロックされた渦糸フローと電圧ノイズ
井上甚; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2006年秋季大会
Sep. 2006 - 極低温域におけるピーク効果
神代賢一; 小久保伸人; 大熊哲
Oral presentation, Japanese, 日本物理学会,2006年秋季大会
Sep. 2006 - Peak effect and mode locking of vortex matter in NbSe2 crystals
N. Kokubo; K. Kadowaki; K. Takita; T. G. Sorop; P. H. Kes
Invited oral presentation, English, 11th International Workshop on Vortex Matter, Wroclaw, Poland, International conference
Jul. 2006 - Quasi One-Dimensional Vortex Flow Driven Through Mesoscopic Channels
N. Kokubo; R. Besseling; T.G. Sorop; P. H. Kes
Invited oral presentation, English, 10th Vortex state studies workshop, Mumbai, India, International conference
Jan. 2005 - Dynamic ordering and flow structure of vortex matter driven through mesoscopic channels
N. Kokubo; R. Besseling; P. H. Kes
Invited oral presentation, English, The Joint 9th International Workshop on Vortex Dynamics and Vortex Matter (ESF), Oléron Island France, International conference
Jun. 2003 - Mode locking of the Abrikosov vortex lattice driven through mesoscopic channels
N. Kokubo; R. Besseling; P. H. Kes
Invited oral presentation, English, ESF workshop, Vortices in Josephson Junctions and Nanostructures, Maratea, Italy, International conference
Sep. 2002 - Mode locking for ac dc driven vortices in easy flow channels
N. Kokubo; R. Besseling; P. H. Kes
Invited oral presentation, English, 8th Workshop on Vortex Physics, Bariloche, Argentina, International conference
Nov. 2001
Research Themes
- 先端型ナノSQUIDを用いた局所温度計測技術の開発
精密測定技術振興財団, Principal investigator
Jan. 2024 - Mar. 2025 - 針状のガラス管先端を利用した超伝導ナノセンシング技術の開発
01 Apr. 2021 - ナノピペットを利用した超伝導ナノセンシング技術の開発
公益財団法人精密測定技術振興財団, 研究助成
01 Apr. 2020 - 微小な超伝導単結晶薄膜に閉じ込めた量子渦状態と制御
小久保伸人
Principal investigator
01 Apr. 2017 - 31 Mar. 2019 - ナノドットを用いた微小超伝導体の反量子渦状態と制御
小久保伸人
Principal investigator
01 Apr. 2014 - 31 Mar. 2017 - 超伝導量子渦ビットの創出
Nobuhito KOKUBO
Principal investigator
01 Apr. 2014 - 31 Mar. 2016 - Novel ordered phases at low temperatures and dynamic phase transitions in the superconducting vortex system
Okuma Satoshi; KOKUBO Nobuhito; ISHIDA Takekazu
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, Tokyo Institute of Technology, Grant-in-Aid for Scientific Research (B), We have developed a measurement system for a mode-locking resonance with pulsed currents that generate much less heat (by three orders of magnitude) than the previous one, which enables to detect the flow of fast driven vortex lattices. By employing it at low temperatures down to 0.05 K, we successfully observe the dynamic quantum melting of driven lattice in the limit of zero pinning. Thus, we complete static vortex phase diagrams at nearly zero temperature as a function of applied field, namely, the phase diagrams of the field-induced quantum phase transition simultaneously in the absence and presence of pinning. Also, we have performed studies on the reversible-to-irreversible flow transition (RIT) and obtained the following new results: We acquire information on the vortex configuration in the vicinity of RIT. Also, we observe the critical behavior of RIT in the translational motion system where only the local ac shear due to strong random pinning is present., 25287084
01 Apr. 2013 - 31 Mar. 2016 - 幾何学的に閉じ込められた磁束量子状態
01 Apr. 2011 - 31 Mar. 2015 - 磁束格子フローの結晶方位
2008 - 2009 - 微細探針を用いた走査型SQUID顕微鏡センシングコイルによる空間分解能向上の研究
岡安悟
2005 - 2006 - メゾスコピック磁束フローチャネルを用いた整流デバイスの研究
2004 - 2005
