博士（理学）, 電気通信大学, Mar. 1995

Mossbauer spectroscopy

partial density of state

soft-x rays absorption and emission spectroscopy

electronic structure

固体物性

Natural sciences, Magnetism, superconductivity, and strongly correlated systems

01 Apr. 2021
電気通信大学大学院, 情報理工学研究科, 教授

01 Apr. 2010 - 31 Mar. 2021
電気通信大学大学院, 情報理工学研究科, 准教授

Mar. 1995
The University of Electro-Communications, Graduate School, Division of Electro Communications, Department of Applied Physics and Chemistry

Mar. 1992
The University of Electro-Communications, Graduate School, Division of Electro Communications, Department of Applied Physics and Chemistry

Mar. 1990
The University of Electro-Communications, Faculty of Electro Communications, Department of Material Science

Apr. 1983 - Mar. 1986
神奈川県立追浜高等学校

Apr. 2022 - Present
委員, 日本物理学会 大学の物理教育 編集委員会, Society, 2022年度：第78期（編集副委員長）
2023年度：第79期（編集委員長）

Apr. 2022 - Present
SSH運営指導委員, 芝浦工大柏中高等学校

Apr. 2018 - Present
SSH運営指導委員, 神奈川県立希望ヶ丘高校

Apr. 2017 - Present
物理教育委員会 委員, 日本物理学会, Society

Nov. 2009 - Oct. 2010
領域8世話人, 日本物理学会, Society

¹⁴⁹Sm synchrotron-radiation-based Mössbauer and µ+SR studies of Sm₃Ru₄Ge₁₃
Satoshi Tsutsui; Takashi U. Ito; Jin Nakamura; Mio Yoshida; Yoshio Kobayashi; Yoshitaka Yoda; Jumpei G. Nakamura; Akihiro Koda; Ryuji Higashinaka; Dai Aoki; Tatsuma D. Matsuda; Yuji Aoki
Interactions, Springer Science and Business Media LLC, 245, 1, 55/1-55/9, 03 Apr. 2024, Peer-reviwed
International conference proceedings

Magnetic-field-induced valence change in Eu(Co_1−xNi_x)₂P₂ up to 60 T
Raito Nakamura; Azumi Ishita; Jin Nakamura; Hiroto Ohta; Yuya Haraguchi; Hiroko Aruga Katori; Hajime Ishikawa; Akira Matsuo; Koichi Kindo; Minoru Nohara; Akihiko Ikeda
Physical Review B, American Physical Society (APS), 107, 23, 235110, 05 Jun. 2023, Peer-reviwed
Scientific journal

Magnetic Properties of Eu(Co_1−xNi_x)₂P₂
Raito Nakamura; Hiroto Ohta; Yoshio Kobayashi; Yuya Haraguchi; Hiroko Aruga Katori; Jin Nakamura
Last, Journal of the Physical Society of Japan, Physical Society of Japan, 91, 2, 15 Feb. 2022, Peer-reviwed
Scientific journal, English

Sm valence determination of Sm-based Intermetallics using ¹⁴⁹Sm Mössbauer and Sm L_III-edge X-ray absorption spectroscopies
Satoshi Tsutsui; Ryuji Higashinaka; Raito Nakamura; Kosuke Fujiwara; Jin Nakamura; Yoshio Kobayashi; Takashi U. Ito; Yoshitaka Yoda; Kazuo Kato; Kiyofumi Nitta; Naomi Kawamura; Masaichiro Mizumaki; Tatsuma D. Matsuda; Yuji Aoki
Hyperfine Interactions, Springer Science and Business Media {LLC}, 242, 1, Dec. 2021, Peer-reviwed
Scientific journal

Sm valence states and magnetic properties in SmBe13 and SmTi2Al20 investigated by Sm synchrotron-radiation-based Mossbauer spectroscopy
Satoshi Tsutsui; Yoshio Kobayashi; Jin Nakamura; Michael K. Kubo; Shota Amagasa; Yasuhiro Yamada; Yoshitaka Yoda; Yusei Shimizu; Hiroyuki Hidaka; Tatsuya Yanagisawa; Hiroshi Amitsuka; Akira Yamada; Ryuji Higashinaka; Tatsuma D. Matsuda; Yuji Aoki
HYPERFINE INTERACTIONS, SPRINGER, 238, 100/1-8, Nov. 2017, Peer-reviwed, Synchrotron-Radiation-based Sm-149 Mossbauer spectroscopy was applied to Sm intermetallics, SmBe13 and SmTi2Al20. Temperature dependence of the Mossbauer parameters in SmBe13 indicate the Sm valence state is purely trivalent. SmBe13 also showed second-order Doppler shift in synchrotron-radiation-based Sm-149 Mossbauer spectroscopy. The Mossbauer parameters obtained in SmTi2Al20 suggest that the Sm valence is fluctuating and the magnitude of the magnetic moment is reduced by hybridization between 4f and conduction electrons and/or effect of crystal electric field.
International conference proceedings, English

Electronic Structures of Aluminum-Doped Diamond near the Fermi Level
Masaki Mori; Yosuke Saeki; Masaki Hakamata; Takuya Sato; Eiki Kabasawa; Jin Nakamura
Last, J. Phys. Soc. Jpn., Phys. Soc. Jpn., 84, 4, 044704/1-044704/6, 09 Mar. 2015, Peer-reviwed, Aluminum-doped diamond samples were synthesized using the conventional microwave plasma chemical vapor deposition method. The electronic structures were measured using an electron probe microanalyzer and by X-ray photoelectron spectroscopy. The area intensity of the partial profile of Al-3p near the Fermi level increased with increasing aluminum concentration in the sample. The partial profile of Al-3p resembles that of C-2p at high aluminum concentrations, which suggests strong hybridization between Al-3p and C-2p. Additionally, the temperature dependence of the electric resistance yields an activation energy of 8.2 meV at room temperature. The present results suggest the metal–insulator transition of aluminum-doped diamond, similar to that of boron-doped diamond. However, with increasing aluminum concentration, a considerable amount of carriers is not doped to C-2p orbitals in aluminum-doped diamond. The present results indicate that superconductivity in aluminum-doped diamond with the same mechanism as that in boron-doped diamond does not occur.
Scientific journal, English

Magnetic Anomaly of La_1-xM_xFeO₃ (M=Ca, Sr, and Ba) around 100 K
Yuki Nakamae; Shu Ishida; Wataru Takemura; Masatoshi Ohno; Akimasa Okada; Toshihiro Mitsui; Yoshihiko Kobayashi; Jin Nakamura; Kichizo Asai
J. Phys. Soc. Jpn., Phys. Soc. Jpn., 83, 6, 063701/1-063701/4, 01 May 2014, Peer-reviwed
Scientific journal, English

Managing the Learning Quality in Physics by Learning by e-Learning Improvement with Collaborative Education
Masahiko KANENAGA; Masaru SUZUKI; Kohji ABE; Jin NAKAMURA; Tohru TAKADA; Nobuhito KOKUBO; Yuki FUSEYA
JPS Conference Proceedings, 1, 017018/1-017018/4, 2014, Peer-reviwed
International conference proceedings, English

Physics Laboratory in UEC
Tohru TAKADA; Jin NAKAMURA; Masaru SUZUKI
JPS Conference Proceedings, 1, 017031/1-017031/4, 2014, Peer-reviwed
International conference proceedings, English

Observation of Domain Structures Near the alpha-INC-beta Phase Boundary in Quartz Using X-ray Topography
T. Nakano; D. Terada; Y. Kashiwa; M. Toyonaga; J. Nakamura; K. Abe
FERROELECTRICS, TAYLOR & FRANCIS LTD, 441, 3-8, 2012, Peer-reviwed, The domain structures near the alpha-INC-beta phase boundary in quartz were simultaneously observed using synchrotron radiation X-ray topography and optical microscopy. In (1-10) topographic images of Z-cut samples, a fine structure corresponding to the "m-zone" in the optical microscopic image was observed. In (3-31) topographic image, at the "fog-zone" of the alpha phase side, a marble-like domain, which has never been seen before, with clear contrast was observed. A section topography of the marble-like domain showed that this domain formed a needle shape along the Z-axis. Therefore, the boundary of these domains is the origin of the property of opalescence.
Scientific journal, English

Electronic structures of B 2p levels in homo-epitaxial growth boron-doped diamond by soft X-rays absorption spectroscopy
J. Nakamura; E. kabasawa; Y. Harada; S. Iriyama; A. Kawano; T. Oguchi; K. Kuroki; Y. Takano; H. Kawarada
Lead, Physica C, 470, S671-S672, May 2010, Peer-reviwed
International conference proceedings, English

Near E-F electronic structure of heavily boron-doped superconducting diamond
H. Okazaki; T. Yokoya; J. Nakamura; N. Yamada; T. Nakamura; T. Muro; Y. Tamenori; T. Matsushita; Y. Takata; T. Tokushima; S. Shin; Y. Takano; M. Nagao; T. Takenouchi; H. Kawarada; T. Oguchi
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, PERGAMON-ELSEVIER SCIENCE LTD, 69, 12, 2978-2981, Dec. 2008, Peer-reviwed, We have performed soft X-ray angle-resolved photoemission spectroscopy (SXARPES) of a heavily boron-doped superconducting diamond film (T-c = 7.2 K) in order to Study the electronic structure near the Fermi level (E-F). Careful determination of measured momentum space that across F point in the Brillouin zone (BZ) and increase of an energy resolution provide further spectroscopic evidence that EF is located at the highly dispersive diamond-like bands, indicating that holes at the top of the diamond-like valence band play an essential role for the conducting properties of the heavily boron-doped superconducting diamond for this boron-doping region (effective carrier concentration of 1.6%). The SXARPES intensities at E-F were also mapped out over BZ to obtain experimental Fermi surface sheets and compared with calculations. Crown Copyright (c) 2008 Published by Elsevier Ltd. All rights reserved.
Scientific journal, English

Near E-F electronic structure of heavily boron-doped superconducting diamond
H. Okazaki; T. Yokoya; J. Nakamura; N. Yamada; T. Nakamura; T. Muro; Y. Tamenori; T. Matsushita; Y. Takata; T. Tokushima; S. Shin; Y. Takano; M. Nagao; T. Takenouchi; H. Kawarada; T. Oguchi
JOURNAL OF PHYSICS AND CHEMISTRY OF SOLIDS, PERGAMON-ELSEVIER SCIENCE LTD, 69, 12, 2978-2981, Dec. 2008, Peer-reviwed, We have performed soft X-ray angle-resolved photoemission spectroscopy (SXARPES) of a heavily boron-doped superconducting diamond film (T-c = 7.2 K) in order to Study the electronic structure near the Fermi level (E-F). Careful determination of measured momentum space that across F point in the Brillouin zone (BZ) and increase of an energy resolution provide further spectroscopic evidence that EF is located at the highly dispersive diamond-like bands, indicating that holes at the top of the diamond-like valence band play an essential role for the conducting properties of the heavily boron-doped superconducting diamond for this boron-doping region (effective carrier concentration of 1.6%). The SXARPES intensities at E-F were also mapped out over BZ to obtain experimental Fermi surface sheets and compared with calculations. Crown Copyright (c) 2008 Published by Elsevier Ltd. All rights reserved.
Scientific journal, English

Conformational change detection in nonmetal proteins by direct electrochemical oxidation using diamond electrodes
Masanobu Chiku; Jin Nakamura; Akira Fujishima; Yasuaki Einaga
ANALYTICAL CHEMISTRY, AMER CHEMICAL SOC, 80, 15, 5783-5787, Aug. 2008, Peer-reviwed, In this report, we established a new electrochemical method for the detection of conformational changes in large, non-metalloproteins such as bovine serum albumin, using flow injection analysis coupled with hydrogen-terminated, boron-doped diamond electrodes. The oxidation current was used as a signal reporter in the monitoring of urea-induced BSA denaturation. In the denatured state at high urea concentrations, the electrochemical signal increased, and the amperometric responses for the oxidation potential at 1300 mV were consistent with the results of conventional methods of denaturation monitoring using fluorescence spectroscopy. The oxidation involved at least five redox-active species (cysteine, tryptophan, tyrosine, methionine, and disulfide bonds). Furthermore, the method also showed high sensitivity for quantitative analysis of protein. A linear dynamic in the concentration range 50-400 mu g/mL (r(2) = 0.977) with a lower detection limit of 190 ng/mL was achieved for BSA. Direct electrochemical detection of conformation changes of proteins using BDD electrodes can be performed with advantages in terms of simplicity and sensitivity.
Scientific journal, English

Holes in the Valence Band of Superconducting Boron-Doped Diamond Film Studied by Soft X-ray Absorption and Emission Spectroscopy
Jin NAKAMURA; Nobuyoshi YAMADA; Kazuhiko KUROKI; Tamio OGUCHI; Kozo OKADA; Yoshihiko TAKANO; Masanori NAGAO; Isao SAKAGUCHI; Tomohiro TAKENOUCHI; Hiroshi KAWARADA; Rupert C. C. PERERA; David L. EDERER
J. Phys. Soc. Jpn, THE PHYSICAL SOCIETY OF JAPAN, 77, 5, 054711/1-6, Apr. 2008, Peer-reviwed, Carbon- and boron-2p states of superconducting and non-superconducting boron-doped diamond (BDD) samples are measured using soft X-ray emission and absorption spectroscopy (XES and XAS) near C- and B-K edges. The electronic structure of B 2p does not show a marked boron-doping dependence, except that a considerable amount of in-gap state in empty states is observed. In C-K XAS spectra, two peaks H and I are observed around the Fermi level. The H peak is attributed to 2p state of carbon first-nearest neighboring to the dopant boron atoms (1NN-C), and the I peak to 2p state of carbon further than 1NN-C from an impurity boron. Incoherent (normal-excitation) XES spectra do not show a large chemical shift by B-doping, but its intensity just below the valence band maximum (VBM) decreases with B-doping. It cannot be interpreted within a simple rigid band model. An elastic peak of I-excited C-K XES spectrum and the width of I-peak of C-K XAS spectrum suggest that impurity state is localized in non-superconducting BDD but is not in superconducting BDD. Namely impurity state of superconducting BDD is merged with the valence band, and holes in the merged state play an important role in the occurrence of superconductivity of BDD.
Scientific journal, English

Hole Distribution in (Sr,Ca,Y,La)₁₄Cu₂₄O₄₁ Compounds Studied by X-ray Absorption and Emission Spectroscopy
Eiki KABASAWA; Jin NAKAMURA; Nobuyoshi YAMADA; Kazuhiko KUROKI; Hisashi YAMAZAKI; Masamitsu WATANABE; Jonathan D. DENLINGER; Shik SHIN; Rupert C. C. PERERA
J. Phys. Soc. Jpn, THE PHYSICAL SOCIETY OF JAPAN, 77, 3, 034704/1-11, Feb. 2008, Peer-reviwed, The polarization dependence of soft x-ray absorption spectroscopy (XAS) and x-ray emission spectroscopy (XES) near the O 1s absorption edge was measured on two-leg ladder single-crystalline samples of (Sr,Ca,Y,La)₁₄Cu₂₄O₄₁ (14-24-41). The hole distributions in 14-24-41 compounds are determined by polarization analysis. For samples with less than or equal to 5 holes/chemical formula (c.f.), all holes reside on the edge-shared chain layer. In the case of Sr_14−xCa_xCu₂₄O₄₁ (6 holes/c.f.), there is approximately one hole on the two-leg ladder layer, with about five holes remaining on the edge-shared chain layer. By Ca substitution for Sr in the Sr_14−xCa_xCu₂₄O₄₁ samples, 0.3 holes transfer from the edge-shared chain to the two-leg ladder layer. It is possible that some of the holes on the two-leg ladder layer move from the rung sites to the leg sites upon Ca substitution.
Scientific journal, English

Multiple bosonic mode coupling in the electron self-energy of (La2-xSrx)CuO4
XJ Zhou; Shi, JR; T Yoshida; T Cuk; WL Yang; Brouet, V; J Nakamura; N Mannella; S Komiya; Y Ando; F Zhou; WX Ti; JW Xiong; ZX Zhao; T Sasagawa; T Kakeshita; H Eisaki; S Uchida; A Fujimori; ZY Zhang; EW Plummer; RB Laughlin; Z Hussain; ZX Shen
PHYSICAL REVIEW LETTERS, AMER PHYSICAL SOC, 95, 11, 11700/1-4, Sep. 2005, Peer-reviwed, High resolution angle-resolved photoemission spectroscopy data along the (0, 0)-(pi,pi) nodal direction with significantly improved statistics reveal fine structure in the electron self-energy of the underdoped (La2-xSrx)CuO4 samples in the normal state. Fine structure at energies of (40-46) meV and (58-63) meV, and possible fine structure at energies of ( 23 - 29) meV and ( 75 - 85) meV, have been identified. These observations indicate that, in (La2-xSrx) CuO4, more than one bosonic modes are involved in the coupling with electrons.
Scientific journal, English

X-ray spectroscopy study on the electronic structure of hole-doped edge-shared chains in Ca2+xY2-xCu5O10
E Kabasawa; J Nakamura; T Morimoto; N Yamada; K Kuroki; H Yamazaki; K Okada; K Oka; Y Tezuka; JD Denlinger; RCC Perera
JOURNAL OF ELECTRON SPECTROSCOPY AND RELATED PHENOMENA, ELSEVIER SCIENCE BV, 148, 1, 65-72, Jul. 2005, Peer-reviwed, X-ray absorption (XAS) and emission (YES) spectroscopy near O K edge has been performed on edge-shared CuO chain compounds Ca2+xY2-xCu5O10 (0.0 <= x <= 2.0) using poly- and single-crystalline samples. Two large peaks are observed at 528 eV (P-H) and 530 eV (P-H) in the XAS spectra. The intensity of the PH peak monotonically increases and that of the Pu monotonically decreases with hole doping. The two characteristic peaks in the XAS spectra at PH and P-U, which are assigned for the polycrystalline samples to the hole and upper Hubbard band (UHB) states, respectively. The theoretical calculations reproduce the experimental XAS results, especially that the PH peak decreases by hole doping. The spectral weight transfer from the P-U peak to the PH peak of the edge-shared chain by hole doping is strongly suppressed in comparison with that of the CuO2 plane. From the single crystal measurements of undoped Ca2Y2Cu5O10, the spectra of XAS and XES are interpreted in terms of a square-like CuO4 plaquette for the compound. As for the hole-doped Ca3YCu5O10 sample, the plaquette containing a doped hole is found to be square-like, and the plaquettes with no doped holes are found to be rectangle-like. We concluded that the doped hole is localized associated with the lattice deformation. The electric properties are discussed based on our result. (c) 2004 Elsevier B.V. All Rights Reserved.
Scientific journal, English

Electronic structures of B 2p and C 2p levels in boron-doped diamond films studied using soft x-ray absorption and emission spectroscopy
J Nakamura; E Kabasawa; N Yamada; Y Einaga; D Saito; H Isshiki; S Yugo; RCC Perera
PHYSICAL REVIEW B, AMERICAN PHYSICAL SOC, 70, 24, 245111/1-6, Dec. 2004, Peer-reviwed, X-ray absorption (XAS) and emission (XES) spectroscopy near B K and C K edges have been performed on metallic (similar to0.1 at. % B, B-diamond) and semiconducting (similar to0.03 at. % B and N, BN-diamond) doped diamond films. Both B K XAS and XES spectra show a metallic partial density of states (PDOS) with the Fermi energy of 185.3 eV, and there is no apparent boron-concentration dependence in contrast to the different electric property. In C K XAS spectrum of B-diamond, the impurity state ascribed to boron is clearly observed near the Fermi level. The Fermi energy is found to be almost same with the top of the valence band of nondoped diamond: E-V=283.9 eV. C K XAS of BN-diamond shows both the B-induced shallow level and N-induced deep and broad levels as the in-gap states, in which the shallow level is in good agreement with the activation energy (E-a=0.37 eV) estimated from the temperature dependence of the conductivity; namely, the change in C 2p PDOS of impurity-induced metallization is directly observed. The electric property of this diamond is ascribed mainly to the electronic structure of C 2p near the Fermi level. The observed XES spectra are compared with the discrete variational Xalpha (DVXalpha) cluster calculation. The DVXalpha result supports the strong hybridization between B 2p and C 2p observed in XAS and XES spectra, and suggests that the small amount of boron (less than or equal to0.1 at. %) in diamond occupies the substitutional site rather than interstitial site.
Scientific journal, English

Electronic structure of B 2p sigma and p pi states in MgB2, AlB2, and ZrB2 single crystals
J Nakamura; S Nasubida; E Kabasawa; H Yamazaki; N Yamada; K Kuroki; M Watanabe; T Oguchi; S Lee; A Yamamoto; S Tajima; Y Umeda; S Minakawa; N Kimura; H Aoki; S Otani; S Shin; TA Callcott; DL Ederer; JD Denlinger; RCC Perera
PHYSICAL REVIEW B, AMER PHYSICAL SOC, 68, 6, 064515/1-5, Aug. 2003, Peer-reviwed, The effect of electron correlation (EC) on the electronic structure in MgB2, AlB2, and ZrB2, is studied by examining the partial density of states (PDOS) of B 2psigma and ppi orbitals using the polarization dependence of x-ray emission and absorption spectra. The discrepancies between observed and calculated PDOS's cannot be attributed to EC effects. The present results suggest that the EC effect is less than the experimental error (similar to0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity.
Scientific journal, English

Electronic structure of B-2p state in AIB(2) single crystal: Direct observation of p sigma and p pi density of states
J Nakamura; M Watanabe; T Oguchi; SY Nasubida; E Kabasawa; N Yamada; K Kuroki; H Yamazaki; S Shin; Y Umeda; S Minakawa; N Kimura; H Aoki
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, PHYSICAL SOC JAPAN, 71, 2, 408-410, Feb. 2002, Peer-reviwed, X-ray emission (XES) and absorption (XAS) spectra near the B-K edge were measured on single-crystalline AIB(2) compound which is an isostructural diboride of superconducting MgB2. The partial density of states (PDOS) of B-2psigma and ppi orbitals were derived from the polarization dependence of XES and XAS spectra. There are considerable amounts of PDOS near the Fermi energy in AIB(2) similarly to that in MgB2, but there are almost no PDOS in psigma orbitals of AIB(2) near the Fermi energy, i.e., a pseudo-gap in psigma state and a broad metallic state in ppi state are observed. The present result indirectly supports scenarios that the p(7 holes play an important role in the occurrence of superconductivity in MgB2. The overall features of PDOS were found to be in good agreement with the result of band calculation of AIB(2), but a small discrepancy in the Fermi energy is observed, which is attributed to the Al vacancy in the compounds, i.e., the estimated concentration is Al0.93B2.
Scientific journal, English

Soft x-ray spectroscopy experiments on the near K-edge of B in MB₂ (M=Mg, Al, Ta and Nb)
Jin Nakamura; Nobuyoshi Yamada; Kazuhiko Kuroki; Thomas A Callcott; David L. Ederer; Jonathan D. Denlinger; Rupert C. C. Perera
Physical Review B, 64, 174504/1-4, Sep. 2001, Peer-reviwed
Scientific journal, English

Electronic Structure of Edge-Shared Chain Compounds Ca_2+x_M_2-x_Cu_5_O_10_ (M=Y, Nd, Eu, Gd) Studied by X-ray Absorption and Emission Spectroscopies
J. Nakamura; E. Kabasawa; N. Yamada; H. Yamazaki; Y. Tezuka; H. Yamaguchi; K. Oka; T. Ito; M. Fujisawa; S. Shin; J.D. Denlinger; R.C.C. Perera
13th International Conference on Vacuum Ultraviolet Radiation Physics (VUV XIII, Trieste Italy), Abstaract of VUV XIII, We142, Jun. 2001
International conference proceedings, English

Direct observation of self-interstitial motion in pure iron by Fe-56(d,p)Fe-57 in-beam Mossbauer spectroscopy
Y Yoshida; Y Kobayashi; F Ambe; E Yagi; Diao, X; J Nakamura; H Hasslein; A Feinauer; T Grund; A Rock; A Seeger
DIFFUSIONS IN MATERIALS: DIMAT2000, PTS 1 & 2, SCITEC PUBLICATIONS LTD, 194-1, 29-34, 2001, Peer-reviwed, Using the Fe-56 (d, p) Fe-57(*) reaction, in-beam Mossbauer spectra of Fe-57(*) implanted into pure Fe were obtained between 50 and 700 K at crystal orientations of the gamma -emission varying from [100] to [110]. Comparison with the spectra of Fe-57(*) on substitutional sites as measured conventionally reveals marked differences between the two sets of hyperfine parameters and indicates the presence of Fe-57(*) on defect sites at times of order of magnitude of 10(-7) s after implantation. Between 400 and 700 K these differences depend strongly on the crystal orientation. The observations allow us to study the jumps of Fe-57(*) on non-lattice sites on the time scale 10(-7) s.
Scientific journal, English

Electronic Structure of Ladders and Chains in Sr_14-xCa_xCu₂₄O₄₁ Studied by X-ray Absorption and Emission Spectroscopies
J. Nakamura; E. Kabasawa; H. Yamazaki; N. Yamada; Y.Tezuka; J. Akimitsu; M.Fujisawa; S. Shin; M.M. Grush; R.C.C. Perera; T.A. Callcott; D.L. Ederer
6th International Conference Materials and Mechanisms of Superconductivity and High Temperature Superconductors（M2SHTSC-VI, Houston, Texas USA），Abstract of M2SHTSC-VI, 108, Feb. 2000
Scientific journal, English

Transport properties of Schottky in-plane-gate GaAs single and coupled quantum wire transistors
J Nakamura; T Kudoh; H Okada; H Hasegawa
COMPOUND SEMICONDUCTORS 1998, IOP PUBLISHING LTD, 162, 162, 409-414, 1999, Peer-reviwed, Schottky in-plane-gate (IPG) single and coupled quantum wire transistors were fabricated, and their basic transport properties of the quantum devices were investigated. The IPG structure realizes strong electron confinement in contrast to conventional split-gate structure. For the single quantum wire transistor, quantized conductance was observed at low temperature and possesses the temperature dependence. Observed temperature dependence was consistent with theoretical prediction based on TL-liquid picture. The coupled quantum wire transistor shows peaks and dips in the output characteristics with changing gate bias. This is explained in terms of coupled transport taking place at the certain gate bias.
Scientific journal, English

"Hole State in Ladder-compound(Sr,Ca)₁₄Cu₂₄O₄₁X-ray Absorption Spectroscopy"，
J. Nakamura; E. Kabasawa; N. Yamada; H. Yamazaki; M.Fujisawa; S. Shin
Activity Report of Synchrotron Radiatin Laboratory 1999 ISSP, 88-89, 1999
Research institution, English

Time-differential perturbed-angular-correlation studies on In-117 and Cd-111 in Li0.995Cd0.005NbO3
Y Ohkubo; S Uehara; Y Kawase; J Nakamura; T Okada; S Ambe; F Ambe; K Asai
PHYSICAL REVIEW B, AMERICAN PHYSICAL SOC, 56, 17, 10730-10733, Nov. 1997, Peer-reviwed, The nuclear-electric-quadrupole interactions at In-117 and Cd-111 nuclei arising from Cd-117 and Cd-111m, respectively, chemically introduced in Li0.995Cd0.005NbO3 polycrystals were studied using the time-differential perturbed angular correlation of gamma rays. The \V-zz(lattice)\ values derived for In-117 and Cd-111 coincided with each other, i.e., 3.4(1) x 10(20) V/m(2) and 3.4(5) x 10(20) V/m(2), respectively, meaning that the In and Cd ions are in the same lattice environment in the forms of In3+ and Cd2+. Although these probes are considered to occupy the Li sites, the above values of V-zz(lattice) are substantially different from the previously reported value for Li-7, 0.7 x 10(20) V/m(2), which is ascribable to the structural relaxation around the probe atoms. The temperature dependence of omega(Q) of In-117 indicates that the In ion vibrates anisotropically about its equilibrium position at high temperatures, as has been argued for the Li ion In LiNbO3. [S0163-1829(97)04942-4].
Scientific journal, English

In-Beam Mossbauer spectrometers for Materials Science at RIKEN Accelerator Research facility
Y. Kobayashi; Y. Yoshida; K. Hayakawa; K. Yukihira; J. Nakamura; H. H\"a\ss lein; R. Sielemann; S. Nasu; Y. Watanabe; A. Yoshida; M. Kase; A. Goto; Y. Yano
Hyperfine Interactions, C3, 273-276, 1996, Peer-reviwed
International conference proceedings, English

Fe-57 Mossbauer spectroscopy of Fe1-xSb
J Nakamura; Y Kobayashi; K Asai; N Yamada; F Ambe
INTERNATIONAL CONFERENCE ON THE APPLICATIONS OF THE MOSSBAUER EFFECT - ICAME-95, EDITRICE COMPOSITORI, 50, 311-314, 1996, Peer-reviwed
International conference proceedings, English

Structural phase transition of BaRu2/3 M(1/3)O(3)(M=Ca,Cd, and Sr) studied by In-117(<-Cd-117) time-differential perturbed-angular-correlation
Y Yanagida; J Nakamura; K Asai; N Yamada; Y Ohkubo; S Ambe; T Okada; F Ambe; S Uehara; Y Kawase
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, PHYSICAL SOC JAPAN, 64, 12, 4739-4747, Dec. 1995, Peer-reviwed, Electric field gradients at In-117(<-- Cd-117) nuclei in BaRu2/3(M(0.97) Cd-116(0.03))(1/3) O-3 (M = Ca, Cd, and Sr) were measured in the temperature range between 4 and 773 K by time-differential perturbed-angular-correlation of the 90-345 keV cascade gamma-rays. For each oxide, the quadrupole interaction frequency markedly increases below a specific temperature; the temperatures are between 4 and 77 K for M = Ca, and about 300 and 600 K for M = Cd and Sr, respectively. Combined with the results of the X-ray powder diffraction measurements, it is concluded that a hexagonal-monoclinic structural phase transition, associated with a deformation of MO(6) octahedra, takes place at the temperature.
Scientific journal, English

MAGNETIC COMPTON PROFILES OF FERROMAGNETIC INTERMETALLIC COMPOUND MNSB
J NAKAMURA; T TAKEDA; K ASAI; N YAMADA; Y TANAKA; N SAKAI; M ITO; A KOIZUMI; H KAWATA
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN, PHYSICAL SOC JAPAN, 64, 4, 1385-1393, Apr. 1995, Peer-reviwed, Directional magnetic Compton profiles (MCPs) of ferromagnetic intermetallic compound Mn1.1Sb are measured using a circularly polarized synchrotron radiation light source. The overall shape of the derived momentum-density distribution of the magnetic electrons is reproduced well with the Hartree-Fock 3d wavefunction of free Mn atoms except in the low momentum region(\P\ less than or similar to 2.0 atomic units). The anisotropy observed in the low momentum region is inexplicable only with the population, determined previously by a polarized neutron measurement, of unpaired electrons in Mn-3d orbitals in the trigonal crystalline field. The present result suggests an additional anisotropic negative polarization of Sb-5p electrons. The anisotropy is discussed using the hydrogen-like atomic Sb-5p wavefunctions.
Scientific journal, English

LOCAL-STRUCTURE AND VALENCE OF IMPURITY IONS IN OXIDES BY TDPAC AND MOSSBAUER EMISSION-SPECTROSCOPY
F AMBE; Y OHKUBO; S AMBE; Y KOBAYASHI; T OKADA; Y YANAGIDA; J NAKAMURA; K ASAI; Y KAWASE; S UEHARA
JOURNAL OF RADIOANALYTICAL AND NUCLEAR CHEMISTRY-ARTICLES, AKADEMIAI KIADO, 190, 2, 215-224, Mar. 1995, Peer-reviwed, The features of time-differential perturbed angular correlation (TDPAC) in studies on local chemical structures around impurity atoms are described in comparison with those of Mossbauer emission spectroscopy with four typical examples of recent applications to metal oxide systems, namely, Rh-99 --> Ru-99 in alpha-Fe2O3 and YBa2Cu3O7-delta and Cd-117 --> In-117 in MO (M = Mn, Co, Ni) and BaRu2/3Cd1/3O3.
Scientific journal, English

SYSTEMATIC BEHAVIOR OF EJECTILE SPIN POLARIZATION IN THE PROJECTILE FRAGMENTATION REACTION
H OKUNO; K ASAHI; H SATO; H UENO; J KURA; M ADACHI; T NAKAMURA; T KUBO; N INABE; A YOSHIDA; T ICHIHARA; Y KOBAYASHI; Y OHKUBO; M IWAMOTO; F AMBE; T SHIMODA; H MIYATAKE; N TAKAHASHI; J NAKAMURA; D BEAUMEL; DJ MORRISSEY; WD SCHMIDTOTT; M ISHIHARA
PHYSICS LETTERS B, ELSEVIER SCIENCE BV, 335, 1, 29-34, Aug. 1994, Peer-reviwed, Ejectile spin polarization P in intermediate-energy projectile fragmentation has been measured for different targets and incident energies using the RIPS fragment separator at RIKEN. The observed P as a function of the fragment momentum shows a systematic change when the atomic number of the target or the incident energy is varied. Most remarkably, P does not vanish at the momentum corresponding to the beam velocity, indicating an important effect which has not been considered in the previously proposed model.
Scientific journal, English

HYPERFINE INTERACTIONS OF SB-121 IN A MAGNETIC CHALCOGEN SPINEL CUCR2-XSBXS4
J NAKAMURA; T OKADA; K ASAI; F AMBE
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION B-BEAM INTERACTIONS WITH MATERIALS AND ATOMS, ELSEVIER SCIENCE BV, 76, 1-4, 39-41, Apr. 1993, Peer-reviwed, Sb-121 Mossbauer spectra for a ferromagnetic chalcogen spinel CuCr2-xSbxS4 (0.1 less-than-or-equal-to x less-than-or-equal-to 0.4) were measured at 77 K. From the value of the isomer shifts, Sb ions are found to be in trivalent state. A large hyperfine magnetic field, H(hf), of 510 kOe is observed for the sample with x = 0.1, but the field decreases with the increase of Sb content x. The magnitude of H(hf) is discussed in comparison with the one previously observed at Sn-119 in a similar compound CuCr2-xSnxS4.
Scientific journal, English

EU-151 MOSSBAUER-EFFECT STUDY OF EUROPIUM ORTHOVANADITE
JS ZHENG; Y KOBAYASHI; J NAKAMURA; K ASAI; GL ZHANG; F AMBE
HYPERFINE INTERACTIONS, BALTZER SCI PUBL BV, 68, 1-4, 307-310, 1991, Peer-reviwed, Eu-151 Mossbauer spectroscopy on EuVO3 in the temperature range of 9 - 293 K indicated that there is a large increase of eVzzQg when temperature goes from 293K down to 9K.
Scientific journal, English

SB-121 MOSSBAUER-SPECTROSCOPY OF MN1+XSB
J NAKAMURA; Y KOBAYASHI; F AMBE; K ASAI; N YAMADA
HYPERFINE INTERACTIONS, BALTZER SCI PUBL BV, 68, 1-4, 311-314, 1991, Peer-reviwed, Sb-121 Mossbauer spectra for ferromagnets, Mn1+xSb (0.00 less-than-or-equal-to x less-than-or-equal-to 0.22) in epsilon-phase were measured at 77 K. The large unique hyperfine magnetic field (H(hf) = 361 kOc) at x = 0 tends to decrease and to have a wide distribution with increase of x. The decreasing ratio of the mean value of H(hf) for the nonstoichiometric samples is in accordance with that of their magnetization M(S)(x), i.e., the relation H(hf)BAR(x)/H(hf)(0) = M(S)(x)/M(S)(0) holds in this system.
Scientific journal, English

層状化合物NdNi₂P₂の磁気特性
石田あずみ; 中村頼人; 池田暁彦; 中村仁
Poster presentation, Japanese, 日本物理学会 2024年春季大会
18 Mar. 2024
18 Mar. 2024- 21 Mar. 2024

Nd(Fe_xCo_1-x)₂P₂の磁気特性とメスバウアー分光
石田あずみ; 吉田実生; 中村頼人; 小林義男; 中村仁
Poster presentation, Japanese, 日本物理学会 2024年春季大会
18 Mar. 2024
18 Mar. 2024- 21 Mar. 2024

Nd(Co_{1-x}Ni_{x})_{2}P_{2}における結晶構造と磁性の研究
石田あずみ; 中村頼人; 中村仁
Poster presentation, Japanese, 日本物理学会第78回年次大会
16 Sep. 2023
16 Sep. 2023- 19 Sep. 2023

中間原子価化合物Eu(Co1-xNix)2P2の151Euメスバウアー分光測定によるEu価数の研究
中村頼人; 太田寛人A; 原口祐哉B; 香取浩子B; 松尾晶C; 金道浩一C; 小林義男; 中村仁
Poster presentation, Japanese, 日本物理学会2021年秋季大会, Peer-reviewed, Domestic conference
23 Sep. 2021

中間原子価化合物Eu(Co1-xNix)2P2の構造と磁性
中村頼人; 太田寛人A; 原口祐哉B; 香取浩子B; 松尾晶C; 金道浩一C; 中村仁
Poster presentation, Japanese, 日本物理学会第76回年次大会, Peer-reviewed, Domestic conference
12 Mar. 2021

Eu(Co1-xNix)2P2のucT及びcT構造における磁性
中村頼人; 太田寛人A; 原口祐哉B; 香取浩子B; 中村仁
Oral presentation, Japanese, 日本物理学会第75回年次大会, Peer-reviewed, Domestic conference
16 Mar. 2020

EuCo2P2のNi置換による磁性の研究
中村頼人; 太田寛人A; 原口祐哉A; 香取浩子A; 中村仁
Oral presentation, Japanese, 日本物理学会,2019年秋季大会, Peer-reviewed, Domestic conference
10 Sep. 2019

塩化鉄GICのメスバウアー分光
蛭田隼介; 本庄匠; 石川佑樹; 中村仁; 小林義男
Oral presentation, Japanese, 日本物理学会,第73回年次大会, Peer-reviewed, Domestic conference
22 Mar. 2018

物理実験の高大連携、情報系の学生にとっての物理実験
中村仁
Public discourse, Japanese, 日本物理学会 第8回物理教育シンポジウム, Invited, 日本物理学会, 東京大学、東京, Peer-reviewed, http://www.jps.or.jp/public/edsympo/2018edsympo.php, Domestic conference
04 Mar. 2018

SmT2Al20(T：遷移金属)の149Sm放射光メスバウアー分光
筒井智嗣; 中村仁; 小林義男; 久保謙哉; 依田芳卓; 水牧仁一朗; 山田瑛; 東中隆二; 松田達磨; 青木勇二
Oral presentation, Japanese, 日本物理学会,2017年秋季大会, Domestic conference
24 Sep. 2017

塩化鉄GICの作製と磁性
蛭田隼介; 石川佑樹; 本庄匠; 青柳善雄; 中村仁; 小林義男
Oral presentation, Japanese, 日本物理学会,2017年秋季大会, Domestic conference
21 Sep. 2017

Sm系重い電子化合物の放射光メスバウアー分光
筒井智嗣; 中村仁; 小林義男; 久保謙哉; 依田芳卓; 山田瑛; 東中隆二; 松田達磨; 青木勇二; 水牧仁一朗; 佐藤英行
Oral presentation, Japanese, 日本物理学会,第72回年次大会, Domestic conference
20 Mar. 2017

電通大における協働型物理学演習の試み
中村仁; 鈴木勝; 佐々木成朗; 伏屋雄紀; 小久保伸人; 高田亨; 阿部浩二
Oral presentation, Japanese, 日本物理学会,第71回年次大会, Domestic conference
19 Mar. 2016

軟X線分光によるCaC6の電子状態観測
大石亘; 佐藤拓哉; 田辺尚也; 中村敦; 森雅樹; 中村仁; 椛沢栄基; 手塚泰久
Poster presentation, Japanese, 日本物理学会,第70回年次大会, Domestic conference
22 Mar. 2015

電通大における新しい物理学演習の試み
中村仁; 伏屋雄紀; 小久保伸人; 佐々木成朗; 高田亨; 鈴木勝; 阿部浩二
Oral presentation, Japanese, 日本物理学会,2014年秋季大会, Domestic conference
07 Sep. 2014

電通大「チーム教育（共有教育）」教育対象の変遷と教育結果
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,第69回年次大会, Domestic conference
Mar. 2014

高濃度ボロンドープダイヤモンドにおけるボロン周辺のカーボンの状態
森雅樹; 佐伯洋祐; 袴田大貴; 佐藤拓哉; 椛沢栄基; 中村仁
Poster presentation, Japanese, 日本物理学会,第69回年次大会, Domestic conference
Mar. 2014

アルミニウムドープダイヤモンドの電気伝導特性と電子状態
袴田大貴; 森雅樹; 椛沢栄基; 中村仁
Poster presentation, Japanese, 日本物理学会,第69回年次大会, Domestic conference
Mar. 2014

磁化及び超音波測定によるペロブスカイト系Co酸化物のスピン転移の研究
佐藤健; 礒本航; 岩澤貴司; 小林利章; 小林義彦; 中村仁; 浅井吉蔵
Poster presentation, Japanese, 日本物理学会,第69回年次大会, Domestic conference
Mar. 2014

超伝導グラファイト層間化合物CaC6のC-2pおよびCa-3d電子状態
山崎健; 森雅樹; 中村敦; 小原健太; 中村仁
Poster presentation, Japanese, 日本物理学会,第69回年次大会, Domestic conference
Mar. 2014

RE1-xMxFeO3 (RE=La, Pr; M=Sr, Ca, Ba)の100K近傍での磁気異常
竹村航; 石田周; 大野正敏; 三井俊宏; 小林義彦; 中村仁; 浅井吉蔵
Poster presentation, Japanese, 日本物理学会,第69回年次大会, Domestic conference
Mar. 2014

La1-xSrxFeO3の100K付近の磁気異常の単結晶試料による研究
中前雄貴; 岡田晃正; 大野正敏; 小林義彦; 中村仁; 浅井吉蔵
Poster presentation, Japanese, 日本物理学会,第69回年次大会, Domestic conference
Mar. 2014

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, Domestic conference
Sep. 2013

電気通信大学における「パスポートプログラム」の取り組みII
赤石暁; 阿部浩二; 石田尚行; 岡田佳子; 奥野剛史; 白川英樹; 鈴木勝; 高田亨; 中村淳; 中村仁; 細見斉子; 山北佳宏
Oral presentation, Japanese, 日本物理学会,2013年秋季大会, Domestic conference
Sep. 2013

Y_3_Fe_5-x_R_x_O_12_(R=Al,Si,Ga,Ge)中の^57^Fe-NMR
高澤大輔; 大澤明弘; 宮田全展; 中村仁; 溝口森二; 浅井吉蔵
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013

電通大「チーム教育（共有教育）」で実施した電磁気学基礎概念調査
阿部浩二; 金長正彦; 鈴木勝; 高田亨; 中村仁
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013

軟X線吸収分光によるグラファイト層間化合物CaC_6_の電子状態
中村敦; 森雅樹; 大和雅俊; 岡村憩; 椛沢栄基; 中村仁
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013

電気通信大学における「パスポートプログラム」の取り組み
赤石暁; 阿部浩二; 石田尚行; 岡田佳子; 奥野剛史; 白川英樹; 鈴木勝; 高田亨; 中村淳; 中村仁; 細見斉子; 山北佳宏
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013

ボロン、アルミニウムをドープした不純物置換ダイヤモンドの作製と評価
森雅樹; 佐伯洋祐; 袴田大貴; 佐藤拓哉; 椛沢栄基; 中村仁
Oral presentation, Japanese, 日本物理学会,第68回年次大会
Mar. 2013

軟X線吸収分光によるCaC_6_の電子状態観察
中村敦; 森雅樹; 椛沢栄基; 中村仁
Oral presentation, Japanese, 日本放射光学会,第26回日本放射光学会年会・放射光科学合同シンポジウム
Jan. 2013

電通大「チーム教育(共有教育)」でのeラーニング改善とその効果
阿部浩二; 金長正彦; 鈴木勝; 高田亨; 中村仁
Oral presentation, Japanese, 日本物理学会,2012年秋季大会
Sep. 2012

ボロン、アルミニウムをドープした不純物置換ダイヤモンドの作製と評価
森雅樹; 佐伯洋祐; 袴田大貴; 中村仁A; 椛沢栄基B
Oral presentation, Japanese, 日本物理学会,2012年秋季大会
Sep. 2012

電通大における物理学実験 学生による達成目標の自己評価と成績の相関
高田亨; 中村仁; 鈴木勝
Oral presentation, Japanese, 日本物理学会,第67回年次大会
Mar. 2012

電通大「チーム教育(共有教育)」の実施結果と追跡調査
阿部浩二; 金長正彦; 葛東方; 鈴木勝; 高田亨; 中村仁
Oral presentation, Japanese, 日本物理学会,第67回年次大会
Mar. 2012

グラファイト層間化合物CaC6の元素置換の試み
大和雅俊; 中村敦; 岡村憩; 中村仁
Oral presentation, Japanese, 日本物理学会,第67回年次大会
Mar. 2012

異なるボロンソースを用いた低濃度ボロンドープダイヤモンドの作製と評価
森雅樹; 佐伯洋祐; 椛沢栄基; 中村仁
Oral presentation, Japanese, 日本物理学会,第67回年次大会
Mar. 2012

直線二配位Fe錯体の巨大内部磁場 (2)
小林義男; 伊藤幹直; 松尾司; 森雅樹; 中村仁; 岡澤厚; 小島憲道; 玉尾皓平
Oral presentation, Japanese, 日本化学会,第９２春季年会
Mar. 2012

電通大「チーム教育(共有教育)」で実施したe-Learning版FCIと基礎学力調査
阿部浩二; 金長正彦; 鈴木勝; 高田亨; 中村仁
Oral presentation, Japanese, 日本物理学会,2011年秋季大会
Sep. 2011

イットリウム鉄ガーネットの誘電緩和と磁気緩和の試料依存性III
新井伸英; 小林義彦; 阿部浩二; 中村仁; 浅井吉蔵
Oral presentation, Japanese, 日本物理学会,第66回年次大会
Mar. 2011

電通大「共有教育（チーム教育）」での力学概念調査
阿部浩二; 金長正彦; 鈴木勝; 中村仁
Oral presentation, Japanese, 第66回年次大会
Mar. 2011

MPCVD法によるボロンドープダイヤモンドの作製
福嶋千豊; 森雅樹A; 佐伯洋祐; 椛沢栄基; 中村仁
Oral presentation, Japanese, 日本物理学会,第66回年次大会
Mar. 2011

固相液相反応によるグラファイト層間化合物の作製
岡村憩; 中村敦; 中村仁
Oral presentation, Japanese, 日本物理学会,第66回年次大会
Mar. 2011

コア・カリキュラム学習支援システムのハンドブック化
浅井吉蔵; 阿部浩二; 大槻一雅; 大淵泰司; 奥野剛史; 尾関之康; 金長正彦; 里岡純子; 島田宏; 清水和子; 鈴木勝; 中村仁; 本山美穂; 渡辺信一
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010

イットリウム鉄ガーネットの誘電緩和と磁気緩和の試料依存性II
新井伸英; 原口数正; 榎下峻平; 小林義彦A; 阿部浩二; 中村仁; 浅井吉蔵
Oral presentation, Japanese, 日本物理学会,2010年秋季大会
Sep. 2010

「コア・カリキュラム学習支援」システムの改善手法
浅井吉蔵; 阿部浩二; 大槻一雅; 大淵泰司; 奥野剛史; 尾関之康; 金長正彦; 島田宏; 清水和子; 鈴木勝; 中村仁; 本山美穂; 渡辺信一
Oral presentation, Japanese, 日本物理学会,第65回年次大会
Mar. 2010

電通大における物理実験とレポート管理システム
高田亨; 中村仁; 鈴木勝
Oral presentation, Japanese, 日本物理学会,第65回年次大会
Mar. 2010

Electronic structure of B2p levels in homo-epitaxial growth boron doped diamond by soft x-rays absorption and emission spectroscopy
J. Nakamura; E. Kabasawa; Y. Harada; S. Iriyama; A. Kawano; T. Oguchi; K. Kuroki; Y.Takano; H. Kawarada
Oral presentation, English, Abstract of M2S-IX
Sep. 2009

軟X線吸収・発光分光による希薄にドープされた元素の分析
中村仁
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009

学習者カルテに基づくコア・カリキュラムの学習支援とその改善
浅井吉蔵; 阿部浩二; 大槻一雅; 大淵泰司; 奥野剛史; 尾関之康; 金長正彦; 島田宏; 清水和子; 鈴木勝; 中川徹夫; 中村仁; 渡辺信一
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009

イットリウム鉄ガーネットの誘電緩和と磁気緩和の試料依存性
新井伸英; 榎下峻平; 小林義彦A; 阿部浩二; 中村仁; 浅井吉蔵
Oral presentation, Japanese, 日本物理学会,2009年秋季大会
Sep. 2009

学習者カルテに基づくコア・カリキュラムの学習支援とその効果
浅井吉蔵; 阿部浩二; 大槻一雅; 大淵泰司; 奥野剛史; 尾関之康; 金長正彦; 島田宏; 清水和子; 鈴木勝; 中川徹夫; 中村仁; 渡辺信一
Oral presentation, Japanese, 日本物理学会,2009年第64回年次大会
Mar. 2009

超伝導ボロンドープダイヤモンドの軟X線吸収発光
中村仁
Public symposium, Japanese, PF研究会「BL2Cユーザー研究会：PFの挿入光源における新しい研究の探究」, 高エネルギー加速器研究機構物質構造科学研究所・放射光科学研究施設, つくば
Jan. 2009

単結晶ボロンドープダイヤモンドの軟X線吸収スペクトルにおけるギャップ内準位
中村仁; 原田慈久; 黒木和彦; 小口多美夫; 高野義彦; 入山慎吾; 川原田洋
Oral presentation, Japanese, 日本物理学会,2008年秋季大会
Sep. 2008

Electronic structure of homo-epitaxial growth boron doped diamond by soft x-rays absorption and emission spectroscopy
J. Nakamura; N. Yamada; K. Kuroki; T. Oguchi; Y.Takano; S. Iriyama; T. Takenouchi; H. Kawarada
Public symposium, English, nternational Workshop on Superconductivity in Diamond and Related Materials (IWSDRM2008), NIMS WEEK July 14-18, 2008, つくば
Jul. 2008

K吸収端近傍軟X線吸収発光による超伝導ボロンドープダイヤモンドの電子状態
中村仁; 黒木和彦; 山田修義; 小口多美夫; 高野義彦; 川原田洋
Oral presentation, Japanese, 科研費特定領域研究「異常量子物質の創製 ー新しい物理を生む新物質ー」,2007年度成果報告会
Jan. 2008

軟X線吸収発光分光法によるボロンドープダイヤモンドの電子状態II
中村仁; 椛沢栄基; 黒木和彦; 山田修義; 小口多美夫; 岡田耕三; 長尾雅則; 高野義彦; 入山慎吾; 竹之内智大; 川原田洋; J.D. Denlinger; D.L. Ederer
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007

ボロンドープダイヤモンドのラマンスペクトル及び赤外吸収スペクトルII
佐藤貴之; 兼田紗衣; 中村仁; 阿部浩二; 山田修義; 竹之内智大; 入山慎吾; 川原田洋; 長尾雅則; 高野義彦
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007

シリコン表面極浅ドープボロン原子の内殻発光分光による電子状態観測
原田慈久; 中村仁; 角嶋邦之; 服部健雄; 岩井洋; 金成国; 佐々木雄一朗; 水野文二; 辛埴
Oral presentation, Japanese, 日本物理学会,第62回年次大会
Sep. 2007

Electronic Structures of B-2p and C-2p Levels of Boron Doped Diamond by Soft X-rays Absorption and Emission Spectroscopy near B- and C-K edges
J. Nakamura; N. Yamada; K. Kuroki; T. Oguchi; Y. Takano; T. Takenouchi; S. Iriyama; H. Kawarada
Oral presentation, English, Yamada Conference LXI, Spectroscopies in Novel Superconductors,SNS2007
Aug. 2007

Electronic Structure of heavily boron-doped superconducting diamond film
H. Okazaki; T. Yokoya; J. Nakamura; N. Yamada; T. Nakamura; T. Muro; Y. Tamenori; T. Matushita; Y. Tanaka; T. Tokushima; S. Shin; Y. Takano; M. Nagao; T. Takenouchi; H. Kawarada; T. Oguchi
Oral presentation, English, Yamada Conference LXI, Spectroscopies in Novel Superconductors,SNS2007
Aug. 2007

ボロンドープダイアモンドのラマン散乱スペクトル
阿部浩二; 大石亮; 佐藤貴之; 中村仁; 山田修義; 川原田洋; 竹之内智大; 高野義彦; 長尾雅則
Oral presentation, Japanese, 日本物理学会,2007年春季大会
Mar. 2007

軟X線吸収発光分光法によるボロンドープダイヤモンドの電子状態
中村仁; 椛沢栄基; 黒木和彦; 山田修義; 小口多美夫; 岡田耕三; 長尾雅則; 高野義彦; 竹之内智大; 川原田洋; J.D. Denlinger; D.L. Ederer
Oral presentation, Japanese, 日本物理学会,2007年春季大会
Mar. 2007

軟X線吸収・発光分光によるBドープダイヤモンドの電子状態
中村仁; 山田修義; 小口多美夫; 高野義彦; 竹之内智大; 川原田洋
Public symposium, Japanese, 第24回PFシンポジウム, 高エネルギー加速器研究機構物質構造科学研究所・放射光科学研究施設
Mar. 2007

軟X線吸収発光分光によるボロンドープダイヤモンドの電子状態
山田修義; 中村仁; 椛沢栄基; 黒木和彦; 小口多美夫; 岡田耕三; 長尾雅則; 高野義彦; 竹之内智大; 川原田洋
Oral presentation, Japanese, 科研費特定領域研究「異常量子物質の創製 –新しい物理を生む新物質-」,2006年度成果報告会
Jan. 2007

ボロンドープダイヤモンドのラマンスペクトル
阿部浩二; 山田修義; 中村仁; 高野義彦; 川原田洋; 竹之内智大
Oral presentation, Japanese, 科研費特定領域研究「異常量子物質の創製 –新しい物理を生む新物質-」,2006年度成果報告会
Jan. 2007

ホモエピタキシャル成長させたボロンドープダイヤモンドの電子状態
中村仁; 椛沢栄基; 黒木和彦; 山田修義; 小口多美夫; 岡田耕三; 長尾雅則; 高野義彦; 竹之内智大; 川原田洋; J.D. Denlinger; D.L. Ederer
Oral presentation, Japanese, 日本物理学会,2006年秋季大会
Sep. 2006

ボロンドープダイヤモンドのラマンスペクトル及び赤外吸収スペクトル
大石亮; 佐藤貴之; 中村仁; 阿部浩二; 山田修義; 栄長泰明; 川原田洋; 竹之内智大; 高野義彦; 長尾雅則
Oral presentation, Japanese, 日本物理学会,2006年秋季大会
Sep. 2006

CrB2の電子構造
原田崇史; 塩谷亘弘; 中村仁; 山田修義; 河田洋; 大谷茂樹
Oral presentation, Japanese, 日本物理学会,第61回年次大会
Mar. 2006

ボロンドープダイヤモンドのラマン及びX線吸収分光
大石亮; 佐藤貴之; 中村仁; 阿部浩二; 山田修義; 栄長泰明; 川原田洋; 竹之内智大; 高野義彦; 長尾雅則
Oral presentation, Japanese, 日本物理学会,第61回年次大会
Mar. 2006

軟X線吸収・発光分光によるBドープダイヤモンドの電子状態
中村仁; 黒木和彦; 山田修義; 小口多美夫; 岡田耕三; 栄長泰明; 高野義彦; 長尾雅則; 坂口勲; 竹之内智大; 梅澤仁; 川原田洋; D.L. Ederer
Public symposium, Japanese, 第23回PFシンポジウム, 高エネルギー加速器研究機構物質構造科学研究所・放射光科学研究施設, つくば
Mar. 2006

軟Ｘ線発光・吸収分光による、超伝導ボロンドープダイアモンドの電子構造の研究
中村仁; 山田修義
Public symposium, Japanese, X線非弾性散乱を用いた物性研究III, 高エネルギー加速器研究機構物質構造科学研究所・放射光科学研究施設, つくば
Jan. 2006

X線吸収・発光分光法による低次元系銅酸化物の電子状態の観測
椛沢栄基; 中村仁; 長久剛; 森本孝; 山田修義; 山崎尚; 辛埴; 渡邊正満
Oral presentation, Japanese, 日本物理学会2003年秋（3月20-23日）（岡山大学）講演概要集第3分冊 p.536.
2003

軟X線吸収・発光分光によるMgB_2_、AlB_2_単結晶のBの電子状態：pσ、pπ 軌道の部分電子状態密度
中村仁; 茄子田真也; 椛沢栄基; 渡邊正満; 小口多美夫; 黒木和彦; 山田修義; 山崎尚; 辛埴; Sergey Lee; 内山裕士; 田島節子; 梅田裕二; 皆川慎; 木村憲彰; 青木晴善
Oral presentation, Japanese, 日本物理学会第57回年次大会,滋賀,2002.3.24-27, 24pYJ-12,講演概要集第3分冊
Mar. 2002

軟Ｘ線吸収・発光分光による(Sr,Ca,Y,La)_14_Cu_24_O_41_のOの電子状態
椛沢栄基; 中村仁; 山田修義; 山崎尚; 辛埴; 渡邊正満
Oral presentation, Japanese, 日本物理学会第57会年次大会, 滋賀, 2002.3.24-27, 24pPSA-20, 講演概要集第3分冊
Mar. 2002

軟Ｘ線吸収・発光分光によるMB_2 _(M=Nb,Ta)単結晶のBの部分電子状態密度の観測
茄子田真也; 中村仁; 渡邊正満; 椛沢栄基; 大谷茂樹; 山本文子; 田島節子; 小口多美夫; 黒木和彦; 山田修義; 山崎尚, 辛埴
Oral presentation, Japanese, 日本物理学会第57会年次大会, 滋賀, 2002.3.24-27, 24pPSB-42, 講演概要集第3分冊
Mar. 2002

軟Ｘ線吸収・発光分光によるMB_2 _(M=Zr,Hf)単結晶のBの部分電子状態密度の観測
渡邊正満; 中村仁; 茄子田真也; 椛沢栄基; 大谷茂樹; 小口多美夫; 黒木和彦; 山田修義; 山崎尚, 辛埴
Oral presentation, Japanese, 日本物理学会第57会年次大会, 滋賀, 2002.3.24-27, 24pPSB-43, 講演概要集第3分冊
Mar. 2002

Direct observation of partial density of states by soft X-ray absorption and emission spectroscopies
Jin Nakamura
Oral presentation, English, RIKEN Symposium "Condensed Matter Studies with Radioactive Ion Beams", RIKEN Campus, Wako, Japan
Feb. 2002

軟X線吸収・発光分光によるMB_2_(M=Mg,Al,Nb,Ta)のBの電子状態
中村仁; 山田修義; 黒木和彦; T.A.Callcott; D.L.Ederer; J.D. Denlinger; R.C.C. Perera
Oral presentation, Japanese, 日本物理学会2001年秋季大会,徳島,2001.9.17-20, 20pYA-5,講演概要集第3分冊
Sep. 2001

（Sr,Ca,La,Sr）14Cu24O41 の電子状態
椛沢栄基; 中村 仁; 大浦幸伸; 鈴木隆文; 山田修義; 山崎 尚; 辛 埴; 藤沢正美; R. C. C. Perera
Oral presentation, Japanese, 日本物理学会第56回年次大会講演概要集第３分冊
Mar. 2001

酸素1s発光分光測定によるPrBa2Cu408単結晶の電子状態
大浦幸伸; 鈴木隆文; 椛沢栄基; 中村 仁; 山田修義; 山崎 尚; 伊理武男; 堀井 滋; 辛 埴; 藤沢正美; 山田 裕
Oral presentation, Japanese, 日本物理学会第56回年次大会講演概要集第３分冊
Mar. 2001

Ca2+xY2-xCu5O10 のO-1s吸収端近傍のx 線吸収・発光分光
中村 仁; 椛沢栄基; 山田修義; 山崎 尚; 山口博隆; 岡 邦彦; 伊藤利充; 渡辺正満; 手塚泰久; 藤沢正美; 辛 埴; R. C. C. Perera
Oral presentation, Japanese, 日本物理学会第56回年次大会講演概要集第３分冊
Mar. 2001

（Sr,Ca,La,Sr)14Cu24O41 の酸素1s吸収端近傍のx線吸収・発光分光
椛沢栄基; 中村 仁; 鈴木隆文; 大浦幸伸; 山田修義; 山崎 尚; 辛 埴; 藤沢正美
Oral presentation, Japanese, 第14回日本放射光学会年会・放射光科学合同シンポジュウム講演集
Jan. 2001

辺共有型CuO 鎖化合物のO1 s吸収端近傍のx 線吸収・発光分光
中村 仁; 椛沢栄基; 山田修義; 山崎 尚; 藤沢正美; 辛 埴
Oral presentation, Japanese, 第14回日本放射光学会年会・放射光科学合同シンポジュウム講演集
Jan. 2001

Sr14-xCaxCu24O41のO1s吸収及び発光分光によるchain，leg，rung位置の酸素の局所電子状態
中村 仁; 椛沢栄基; 山崎 尚; 山田修義; 藤沢正美; 辛 埴; 手塚康久; M.M.Grush; R.C.C.Perera; T.A.Callcott; D.L.Ederer
Oral presentation, Japanese, 日本物理学会2000年春の分科会（関西大学）講演概要集第3分冊
2000

（Sr1-xCax）14Cu24O41の酸素1s吸収端近傍のX線吸収
鈴木隆文; 中村仁; 大浦幸伸; 椛沢栄基; 山田修義; 山崎尚; 藤沢正美; 辛 埴
Oral presentation, Japanese, 第13回日本放射光学会年会・放射光科学合同シンポジウム講演予稿集
1999

PrBa2Cu4O8単結晶の酸素吸収端近傍のホール状態
大浦幸伸; 堀井 滋; 中村 仁; 鈴木隆文; 椛沢栄基; 山田修義; 山崎 尚; 辛 埴; 藤沢正美
Oral presentation, Japanese, 第13回日本放射光学会年会・放射光科学合同シンポジウム講演予稿集
1999

YBa2Cu3O7とPrBa2Cu3O7におけるO1sX線吸収端近傍のXAS測定
椛沢栄基; 中村 仁; 鈴木隆文; 大浦幸伸; 山田修義; 山崎 尚; 辛 埴; 藤沢正美
Oral presentation, Japanese, 第13回日本放射光学会年会・放射光科学合同シンポジウム講演予稿集
1999

Local Structure and Valence of Impurity Ions in Oxides by TDPAC and Mossbauer Emission Spectroscopy
F. Ambe; Y. Ohkubo; S. Ambe; Y. Kobayashi; T. Okada; Y. Yanagida; J. Nakamura; K. Asai; Y. Kawase; S. Uehara
Invited oral presentation, English, J. Radioanalytical and Nucl. Chem., International conference
1995

Apr. 1992 - Present
日本放射光学会

Jul. 1990 - Present
日本物理学会

Investigation of the Spin-Phase Separation in LaCoO3 by High-field Magnetization
ASAI Kichizo; SATO Keisuke; KOBAYASHI Yoshihiko; NAKAMURA Jin; KINDO Koichi
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), The present study reveals the mechanism of the temperature-induced spin-state transition of LaCoO3 by investigating the high-field magnetization process of the doped LaCoO3 specimens. The Co3+ ions, which are in the low-spin (LS) state in the lowest temperature, are thermally excited to the high-spin (HS) state above about 30 K. However, the number of the Co3+ ions in the HS state is limited to about 15 % due to a large repulsive interaction among HS Co3+ ions. With further increase of the temperature, the remaining LS Co3+ ions are thermally excited to the intermediate-spin (IS) state around 100 K. It is suggested that other physical properties, such as magnetostriction, of LaCoO3 can be understood in accordance with the present model where HS and IS states coexist above 100 K., 24540365
01 Apr. 2012 - 31 Mar. 2015

Research on partial electronic density of states in superoonducting diborides by x-ray absorption and emission spectroscopies
YAMADA Nobyoshi; OGUCHI Tamio; KUROKI Kazuhiko; WATANABE Masamitsu; NAKAMURA Jin
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), X-ray emission (XES) and obsorption (XAS) spectra near the B K-edge were measured on single-crystalline AlB2 which is an isostructural diboride of superconducting MgB2, and on single-crystalline MgB2. The partial density of states (PDOS) of B-2p-σ and p-π orbitals were derived from the polarization dependence of XES and XAS spectra. The overall features of PDOS were found to be in good agreement with the result of band calculation of AlB2 and MgB2. There are considerable amounts of PDOS near the Fermi energy in AlB2 similarly to that in MgB2, but there are almost no PDOS in p-σ orbitals of AlB2 near the Fermi energy, i.e., a pseudo-gap in p-σ state and a broad metallic state in p-π state are observed, On the contrary, there are considerable amount of PDOS in p-σ orbitals of MgB2 near the Fermi energy, i.e., broad metallic states in p-π state and p-σ state are observed The present result indirectly supports scenarios that the p-σ holes play an important role in the occurrence of superconductivity in MgB2. The effect of electron correlation (EC) on the partial density of state (PDOS) were studied by the polarization dependence of x-ray emission and absorption spectra of MgB2, AlB2 single crystals. There are some discrepancies between the observed PDOSs and theoretical ones, although these are contrary to the electron-correlation effects. The present results suggest that the EC effect is less than the experimental error (0.2 eV), which indirectly supports a scenario that electron-phonon interaction plays an essential role in the occurrence of superconductivity., 14540330
2002 - 2003

Study on Effects of Pr to Site Specific Electronic Structure of High Tc Superconducting Oxide probed by soft-x-ray absorption and emission spectroscopy
YAMADA Nobuyoshi; YAMADA Yuh; TEZUKA Yasuhisa; YAMAZAKI Hisahi; NAKAMURA Jin
Japan Society for the Promotion of Science, Grants-in-Aid for Scientific Research, The University of Electro-Communications, Grant-in-Aid for Scientific Research (C), The site specific electronic structures of oxygen in PrBa_2Cu_3O_7 and YBa_2Cu_3O_7 compounds were recorded from the measurements of O 1 s total x-ray-fluorescence yield and O Kα x-ray fluorescence emission spectra of PrBa_2Cu_3O_7 and YBa_2Cu_3O_7 single crystals. The polarization dependence of the x-ray absorption spectra(XAS) near oxygen absorption edge in the specimens is attributed to the excitation of four in equivalent oxygen sites : O(1) chain, O (2) and O(3) in-plane, and O(4) apical oxygens and the hole states of the oxygens were specified. Thereafter, we obtained the site specific electronic structure by the O Ka x-ray emission spectra (XES), exciting the target oxygen by the use of polarization and energy dependence of hole state. The evidence of hybridization between the Pr 4f and O p-π orbital was observed in the spectrum of O(2,3) in plane of PrBa_2Cu_3O_7) which was predicted by Fehrenbacher : and Rice. The spectrum is consistent with the band theoretical calculation by Liechtenstein and Mazin, based on the Fehrenbacher and Rice model. The site specific electronic structures of oxygen in PrBa_2Cu_4O_8 and YBa_2Cu_4O_8 compounds were recorded from the measurements of O 1 s total x-ray-fluorescence yield and O Ka x-ray fluorescence emission spectra of the single crystals. Consistent results with the theory by Fehrenbacher and Rice were obtained also in these compounds, 11640341
1999 - 2000

自然の不思議－物理教室
Planner, 国立科学博物館・日本物理学会, Seminar, 小学生高学年・中学生向けの体験型実験教室を、2023年度は5回実施した。
Jul. 2023 - Aug. 2023