博士(理学), 青山学院大学

Natural sciences, Magnetism, superconductivity, and strongly correlated systems

Apr. 1998 - Mar. 2003
Aoyama Gakuin University, Graduate School, Division of Science and Engineering, 物理学専攻

Mar. 1992
富山中部高等学校

Two-gap superconducting states of LaRu3Si2
T. Ushioda; T. Muranaka
Corresponding, Physica C: Superconductivity and its Applications, Elsevier BV, 625, 1354583-1354583, Oct. 2024, Peer-reviwed
Scientific journal

Superconducting properties of pt-type and bct-type YRh₄B₄
K Kurata; T Muranaka
Last, Superconductor Science and Technology, IOP Publishing, 36, 8, 085005-085005, 22 Jun. 2023, Peer-reviwed, Abstract

YRh₄B₄, which exhibits high-$T _{\mathrm{c } }$ superconductivity in the RRh₄B₄ system, has two types of crystal structures, CeCo₄B₄ type (pt-type) and LuRu₄B₄ type (bct-type). Both types of structure have similar $T _{\mathrm{c } }$ (pt-type; $T _{\mathrm{c } }$ = 10.6 K, bct-type; $T _{\mathrm{c } }$ = 9.8 K), but the $\mu_0 H _{\mathrm{ { c2 } } }$ of both compounds is very different, pt-type; $\mu_0 H _{\mathrm{ { c2 } } }$ = 2.50 T and bct-type; $\mu_0 H _{\mathrm{ { c2 } } }$ = 9.85 T. From our results, one can see that the difference in $T _{\mathrm{c } }$ between pt-YRh₄B₄ and bct-YRh₄B₄ is mainly caused from the difference of the density of state at Fermi energy. The high-$T _{\mathrm{c } }$ in pt-YRh₄B₄ is derived from the high Debye temperature caused by vibrations of boron. In contrast, in bct-YRh₄B₄ it is caused by a stronger electron–phonon coupling than in pt-YRh₄B₄. Regarding the symmetry of superconductivity, it is suggested that pt-YRh₄B₄ is a clean limit superconductor and has basically a fully gapped superconducting gap, but is slightly anisotropic from the results of $C_{\textrm {el } } \propto \textrm {exp}( -\Delta / k_{\mathrm{B } } T$) below $T _{\mathrm{c } }$ and $\Delta \gamma (H) \propto H^{0.65}$. However, bct-YRh₄B₄ is a dirty limit superconductor and has an anisotropic superconducting gap from the results of $C_{\textrm {el } } \propto T^{3}$ below $T _{\mathrm{c } }$ and $\Delta \gamma (H)\propto H$.
Scientific journal

Superconductivity in a new layered triangular-lattice systemLi2IrSi2
K. Horigane; K. Takeuchi; D. Hyakumura; R. Horie; T. Sato; T. Muranaka; K. Kawashima; H. Ishii; Y. Kubozono; S. Orimo; M. Isobe; J. Akimitsu
New Journal of Physics, IOP Publishing, 21, 093056, 24 Sep. 2019, Peer-reviwed
Scientific journal, English

Superconductivity in Carbide Compounds
Takahiro Muranaka; Jun Akimitsu
Chemical Science Journal, 7, 3, 1000135, 2016, Peer-reviwed
Scientific journal, English

Superconductivity in 122 antimonide SrPt₂Sb₂
Motoharu Imai; Satoshi Emura; Mitsuaki Nishio; Yoshitaka Matsushita; Soshi Ibuka; Naoya Eguchi; Fumihiro Ishikawa; Yuh Yamada; Takahiro Muranaka; Jun Akimitsu
Superconductor Science and Technology, IOP Publishing, 26, 7, 075001-075001, 14 May 2013, Peer-reviwed
Scientific journal

Effect of the counter-anion on the spin-transition properties of a family of Fe(ii) tetrazole complexes, [Fe(i4tz)<inf>6</inf>]X<inf>2</inf> (X = ClO <inf>4</inf>^-, PF<inf>6</inf>^-, SbF<inf>6</inf> ^-, BF<inf>4</inf>^-)
Myrvete Tafili-Kryeziu; Matthias Weil; Takahiro Muranaka; Azzedine Bousseksou; Miki Hasegawa; Akimitsu Jun; Wolfgang Linert
Dalton Transactions, Royal Society of Chemistry, 42, 44, 15796-15804, 2013, Peer-reviwed
Scientific journal, English

Superconductivity in Lu2SnC
S. Kuchida; T. Muranaka; K. Kawashima; K. Inoue; M. Yoshikawa; J. Akimitsu
Physica C: Superconductivity and its Applications, 494, 77-79, 2013, Peer-reviwed
Scientific journal, English

Superconductivity in MgB2
Takahiro Muranaka; Jun Akimitsu
Zeitschrift fur Kristallographie, 226, 4, 385-394, Apr. 2011, Peer-reviwed
Scientific journal, English

Superconductivity in MgB2
Takahiro Muranaka; Jun Akimitsu
ZEITSCHRIFT FUR KRISTALLOGRAPHIE-CRYSTALLINE MATERIALS, 226, 4, 385-394, 2011, Peer-reviwed
Scientific journal, English

Pressure-induced high-T-c superconducting phase in FeSe: Correlation between anion height and T-c
H. Okabe; N. Takeshita; K. Horigane; T. Muranaka; J. Akimitsu
PHYSICAL REVIEW B, 81, 20, May 2010
Scientific journal, English

Superconductivity in the Ternary Germanide Y3Pt4Ge6
Naoki Kase; Takahiro Muranaka; Jun Akimitsu
J PHYS SOC JPN, 77, 054714, May 2008, Peer-reviwed
English

Thermodynamic properties of ferromagnetic Ce-compound, CeAgAl3
Takahiro Muranaka; Jun Akimitsu
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 460, 688-690, Sep. 2007, Peer-reviwed
Scientific journal, English

Scanning tunnelling microscopy and spectroscopy of MgB2
Toshikazu Ekino; Tomoaki Takasaki; Raquel Ribeiro; Takahiro Muranaka; Jun Akimitsu
Journal of Physics: Conference Series, Institute of Physics Publishing, 61, 1, 278-282, 01 Apr. 2007, Peer-reviwed
Scientific journal, English

Superconductivity in magnesium diboride and its related materials
Satoshi Akutagawa; Takahiro Muranaka; Jun Akimitsu
ELECTRON CORRELATION IN NEW MATERIALS AND NANOSYSTEMS, 241, 73-+, 2007, Peer-reviwed
International conference proceedings, English

Superconductivity in M7Re13X (M = W, Mo, X = B, C) compounds
K Kawashima; A Kawano; T Muranaka; J Akimitsu
PHYSICA B-CONDENSED MATTER, 378-80, 1118-1119, May 2006, Peer-reviwed
Scientific journal, English

Superconductivity in intermetallic compound Mo7Re13X(X = B,C)
K Kawashima; T Muranaka; J Akimitsu
SCIENCE AND TECHNOLOGY OF ADVANCED MATERIALS, 7, 1, 9-11, Jan. 2006, Peer-reviwed
Scientific journal, English

Point-contact spectroscopy measurements of binary superconductor MgB2
T Takasaki; T Ekino; RA Ribeiro; T Muranaka; H Fujii; J Akimitsu
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 426, 300-303, Oct. 2005, Peer-reviwed
Scientific journal, English

Spatially heterogeneous character of superconductivity in MgB2 as revealed by local probe and bulk measurements
T Ekino; AM Gabovich; MS Li; T Takasaki; AI Voitenko; J Akimitsu; H Fujii; T Muranaka; M Pekala; H Szymczak
PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 426, 230-233, Oct. 2005, Peer-reviwed
Scientific journal, English

Manifestations of inhomogeneity in MgB2: from specific heat to tunnel measurements
T Ekino; AM Gabovich; MS Li; T Takasaki; AI Voitenko; J Akimitsu; H Fujii; T Muranaka; M Pekala; H Szymczak
PHYSICA B-CONDENSED MATTER, 359, 460-462, Apr. 2005, Peer-reviwed
Scientific journal, English

Superconductivity in intermetallic W7Re13X (X = B and C) compounds
K Kawashima; A Kawano; T Muranaka; J Akimitsu
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 74, 2, 700-704, Feb. 2005, Peer-reviwed
Scientific journal, English

Superconductivity in MgB2 and its related materials
J Akimitsu; S Akutagawa; K Kawashima; T Muranaka
PROGRESS OF THEORETICAL PHYSICS SUPPLEMENT, 159, 326-337, 2005, Peer-reviwed
Scientific journal, English

Superconductivity in MgB2
Jun Akimitsu; Takahiro Muranaka
Physica C: Superconductivity and its Applications, 388-389, 98-102, May 2003, Peer-reviwed
International conference proceedings, English

Electronic structure of (formula presented)X-ray emission and absorption studies
E. Z. Kurmaev; I. I. Lyakhovskaya; J. Kortus; A. Moewes; N. Miyata; M. Demeter; M. Neumann; M. Yanagihara; M. Watanabe; T. Muranaka; J. Akimitsu
Physical Review B - Condensed Matter and Materials Physics, 65, 13, 1-4, 2002, Peer-reviwed
Scientific journal

Grain boundaries as weak links: The case of (formula presented) with reference to (formula presented)
S. B. Samanta; H. Narayan; A. Gupta; A. V. Narlikar; T. Muranaka; J. Akimitsu
Physical Review B - Condensed Matter and Materials Physics, 65, 9, 1-3, 2002, Peer-reviwed
Scientific journal, English

Evidence for high-frequency phonon mediated S-wave superconductivity: (formula presented) NMR study of Al-doped (formula presented)
H. Kotegawa; K. Ishida; Y. Kitaoka; T. Muranaka; N. Nakagawa; H. Takagiwa; J. Akimitsu
Physical Review B - Condensed Matter and Materials Physics, 66, 6, 1-6, 2002, Peer-reviwed
Scientific journal, English

Strong coupling s-wave superconductivity in MgB2: B-11-NMR Study of MgB2 and Al-doped MgB2
Hisashi Kotegawa; Kenji Ishida; Yoshio Kitaoka; Takahiro Muranaka; Norimasa Nakagawa; Hiroyuki Takagiwa; Jun Akimitsu
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, 71, 332-334, Jan. 2002, Peer-reviwed
Scientific journal, English

Thermal transport properties of (formula presented)
T. Muranaka; J. Akimitsu; M. Sera
Physical Review B - Condensed Matter and Materials Physics, 64, 2, 2001, Peer-reviwed
Scientific journal, English

search and evaluate physical properties of new superconductor containing alkali metals by high pressure synthesis
Takeuchi Kazuya; Horigane Kazumasa; Horie Rie; Kobayashi Kaya; Muranaka Takahiro; iIsobe Masaak; Akimitsu Jun
The Physical Society of Japan, 2019, Meeting Abstracts of the Physical Society of Japan, 74.1, 1664-1664, Japanese, 2189-0803, 130008146687

Superconductivity in RTM_4Si_2 (R: rare-earth elements, TM: transition metals)
Kamakura H.; Muranaka T.
The Physical Society of Japan (JPS), 26 Aug. 2013, Meeting abstracts of the Physical Society of Japan, 68, 2, 531-531, Japanese, 1342-8349, 110009757187, AA11439205

Multiple-gap structure of the binary superconductor MgB2
T Takasaki; T Ekino; T Muranaka; H Fujii; J Akimitsu
May 2003, PHYSICA C-SUPERCONDUCTIVITY AND ITS APPLICATIONS, 388, 147-148, English, 0921-4534, 1873-2143, WOS:000183340300067

Multi-gap structure in MgB_2 measured by ultrafast optical response
Murakami H.; Tonouchi M.; Muranaka T.; Akimitsu J.
The Physical Society of Japan, 2003, Meeting Abstracts of the Physical Society of Japan, 58, 0, 702-702, Japanese, 110002221189

Physical Properties in Flux Line Lattice State in MgB 2 Probed by μsR
Kazuki Ohishi; Takahiro Muranaka; Jun Akimitsu; Akihiro Koda; Akihiro Koda; Wataru Higemoto; Wataru Higemoto; Ryosuke Kadono; Ryosuke Kadono; Ryosuke Kadono
01 Dec. 2002, Journal of the Physical Society of Japan, 71, 335-337, 0031-9015, 70349418164

α-Mn型構造の新規HEA超伝導体
中村亮; 村中隆弘
Poster presentation, Japanese, 日本物理学会第79回年次大会
18 Sep. 2024

レニウム硼化物の超伝導
日野豊; 倉又健人; 村中隆弘
Poster presentation, Japanese, 日本物理学会第79回年次大会
18 Sep. 2024

Re-Ru-X三元素系における構造制御と新規超伝導体の開発
中村亮; 村中隆弘
Poster presentation, Japanese, ⽇本物理学会第78回年次⼤会
18 Sep. 2023

W5Si3型構造Nb5Si3のSiサイト置換による超伝導
宮下朋之慎; 越川圭太; 中村亮; 村中隆弘
Poster presentation, Japanese, ⽇本物理学会第78回年次⼤会
18 Sep. 2023

金属ReのTc向上
木友希; 中村亮; 村中隆弘
Poster presentation, Japanese, ⽇本物理学会第78回年次⼤会
18 Sep. 2023

Re-Ru-Ti系の超伝導
中村亮; 村中隆弘
Poster presentation, Japanese, 日本物理学会 2023年春季大会
24 Mar. 2023

(Re,V)2Bの超伝導
倉又健人; 村中隆弘
Oral presentation, Japanese, 日本物理学会 2022年秋季大会
15 Sep. 2022

Superconducting properties of pt-type and bct-type YRh4B4
K. Kurata; T. Muranaka
Oral presentation, Japanese, 日本物理学会 第77回年次大会, Domestic conference
16 Mar. 2022

Superconductivity in intermetallic compounds with light elements
T. Muranaka
Invited oral presentation, English, Materials Research Meeting 2021 (MRM2021), Invited, The Materials Research Society of Japan (MRS-J), Yokohama, International conference
16 Dec. 2021

Lu2SnCの超伝導特性と電子状態
口田沙織; 川島健司; 村中隆弘; 吉川雅章; 秋光純
Poster presentation, Japanese, 日本物理学会 2013年秋季大会
26 Sep. 2019

LaRu3Si2の超伝導対称性
潮田匠史; 村中隆弘
Poster presentation, English, 日本物理学会 第74回年次大会
15 Mar. 2019

LaRh2Ga2の超伝導
中山遥介; 村中隆弘
Poster presentation, Japanese, 日本物理学会 第74回年次大会
15 Mar. 2019

STM/STSによるMgB2超伝導体におけるギャップの温度依存性の観測
柳瀬祐太; 杉本暁; 村中隆弘; 浴野稔一
Poster presentation, Japanese
14 Sep. 2016

RTM4Si2（R:希土類元素，TM:遷移金属元素）の超伝導
鎌倉英通; 村中隆弘
Poster presentation, Japanese, 日本物理学会 2013年秋季大会
26 Sep. 2013

Superconductivity in intermetallic compounds with light elements
T. Muranaka
Invited oral presentation, English, 25th International Symposium on Superconductivity (ISS2012), Invited
Dec. 2012

Superconductivity in wide-gap semiconductors
Takahiro Muranaka
Invited oral presentation, English, The 9th International Conference on Materials and Mechanisms of Superconductivity (M2X-IX), Invited
Sep. 2009

固体物性論基礎
Aug. 2024 - Sep. 2024

物理学概論第一
Apr. 2024 - Sep. 2024

物理工学実験第二
Oct. 2023 - Mar. 2024

波動と光
Oct. 2023 - Mar. 2024

固体物性論基礎
Aug. 2023 - Sep. 2023

物理学概論第一
Apr. 2023 - Sep. 2023

The Physical Society of Japan

量子ビームを用いたオペランド測定による電池材料中の電荷移動機構の解明
Scientific research (B), general, Coinvestigator
Apr. 2023 - Mar. 2026