Studies on superconducting properties and mechanisms of BiS2-based compounds and exploration of new functionality in related materials

• Project/Area Number: 25707031
• Research Category: Grant-in-Aid for Young Scientists (A)
• Allocation Type: Partial Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Tokyo Metropolitan University
• Principal Investigator: Mizuguchi Yoshikazu 首都大学東京, 理工学研究科, 助教 (50609865)
• Project Period (FY): 2013-04-01 – 2016-03-31
• Project Status: Completed (Fiscal Year 2015)
• Budget Amount: ¥28,730,000 (Direct Cost: ¥22,100,000、Indirect Cost: ¥6,630,000); Fiscal Year 2015: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2014: ¥7,280,000 (Direct Cost: ¥5,600,000、Indirect Cost: ¥1,680,000); Fiscal Year 2013: ¥19,500,000 (Direct Cost: ¥15,000,000、Indirect Cost: ¥4,500,000)
• Keywords: BiCh2系層状化合物 / 元素置換 / 超伝導機構 / 化学圧力 / 新超伝導体探索 / トポロジカル超伝導候補物質 / 新熱電材料 / バンドエンジニアリング / 新超伝導体 / 新物質開発 / BiS2系超伝導体 / 熱電変換材料 / 元素置換効果 / 化学圧力効果 / 基礎物性 / 結晶構造解析 / 新超伝導体の機構解明 / BiS2系層状化合物 / 新熱電変換物質 / 局所構造 / 超伝導特性 / 熱電変換性能 / 新超伝導物質 / ＢｉＳ２系超伝導体 / 低温物性測定 / 高圧合成

Outline of Final Research Achievements

To clarify the superconducting properties and the mechanisms of superconductivity in the BiCh2-based (Ch: chalcogen) compounds, we have studied the physical properties and crystal structure of RE(O,F)BiCh2-type compounds. We revealed that the enhancement of in-plane chemical pressure should be essential for the induction of superconductivity and the increase of transition temperature (Tc) in the BiCh2-based superconductors.
New superconductors with a RE(O,F)BiCh2-type structure, new materials with SbS2-type layers, and a Sn1-xAgxTe superconductor, which may be related to topological superconductivity, were discovered during this project.
Furthermore, we have revealed that the Se-substituted LaOBiS2-xSex can be a promising thermoelectric material. The enhancement of in-plane chemical pressure by Se substitution resulted in large electron mobility without degradation of Seebeck coefficient; the highest dimensionless figure-of-merit (ZT) was 0.36 in LaOBiSSe.

Research Products

• [Int'l Joint Research] ローマ大学サピエンツァ校/SPIN(イタリア)
• [Int'l Joint Research] バージニア大学(米国)
• [Journal Article] High-Pressure Synthesis and Superconductivity of Ag-doped Topological Crystalline Insulator SnTe (Sn1-xAgxTe with x= 0-0.5) (2016)
  • Author(s): Y. Mizuguchi, O. Miura
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 5 Pages: 053702-053702
  • DOI: 10.7566/jpsj.85.053702
  • NAID: 210000133925
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Compositional and temperature evolution of crystal structure of new thermoelectric compound LaOBiS2-xSex (2016)
  • Author(s): Y. Mizuguchi, A. Miura, A. Nshida, O. Miura, K. Tadanaga, N. Kumada, C. H. Lee, E. Magome, C. Moriyoshi, Y. Kuroiwa
  • Journal Title: J. Appl. Phys. Volume: in printing
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Thermoelectric properties of new Bi-chalcogenide layered compounds (2016)
  • Author(s): Y. Mizuguchi, A. Nishida, A. Omachi, O. Miura
  • Journal Title: Cogent Phys. Volume: in printing
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Superconductivity phase diagram of Se-substituted CeO0.5F0.5Bi(S1-xSex)2 (2016)
  • Author(s): Y. Mizuguchi, T. Hiroi, O. Miura
  • Journal Title: J. Phys.: Conf. Ser. Volume: 683 Pages: 012001-012001
  • DOI: 10.1088/1742-6596/683/1/012001
  • Peer Reviewed / Open Access
• [Journal Article] Structures and optical absorption of Bi2OS2 and LaOBiS2 (2016)
  • Author(s): Akira Miura, Yoshikazu Mizuguchi, Takahiro Takei, Nobuhiro Kumada, Eisuke Magome, Chikako Moriyoshi, Yoshihiro Kuroiwa, Kiyoharu Tadanaga
  • Journal Title: Solid State Communications Volume: 227 Pages: 19-22
  • DOI: 10.1016/j.ssc.2015.11.016
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Recent Advances in Layered Metal Chalcogenides as Superconductors and Thermoelectric Materials: Fe‐Based and Bi‐Based Chalcogenides (2016)
  • Author(s): Y. Mizuguchi
  • Journal Title: The Chemical Records Volume: in printing
  • Peer Reviewed
• [Journal Article] In-plane chemical pressure essential for superconductivity in BiCh2-based (Ch: S, Se) layered structure (2015)
  • Author(s): Yoshikazu Mizuguchi, Akira Miura, Joe Kajitani, Takafumi Hiroi, Osuke Miura, Kiyoharu Tadanaga, Nobuhiro Kumada, Eisuke Magome, Chikako Moriyoshi, Yoshihiro Kuroiwa
  • Journal Title: Scientific Reports Volume: 2015 Issue: 1 Pages: 14968-14968
  • DOI: 10.1038/srep14968
  • Peer Reviewed / Open Access / Acknowledgement Compliant
• [Journal Article] Structural Difference in Superconductive and Nonsuperconductive Bi-S Planes within Bi4O4Bi2S4 Blocks (2015)
  • Author(s): Akira Miura, Yoshikazu Mizuguchi, Tsuyoshi Sugawara, Yongming Wang, Takahiro Takei, Nobuhiro Kumada, Eisuke Magome, Chikako Moriyoshi, Yoshihiro Kuroiwa, Osuke Miura, Kiyoharu Tadanaga
  • Journal Title: Inorganic Chemistry Volume: 54 Issue: 21 Pages: 10462-10467
  • DOI: 10.1021/acs.inorgchem.5b01919
  • NAID: 120005851043
  • Peer Reviewed
• [Journal Article] High thermoelectric performance and low thermal conductivity of densified LaOBiSSe (2015)
  • Author(s): A. Nishida, O. Miura, C. H. Lee, Y. Mizuguchi
  • Journal Title: Appl. Phys. Express Volume: 8 Issue: 11 Pages: 111801-111801
  • DOI: 10.7567/apex.8.111801
  • NAID: 210000137692
  • Peer Reviewed
• [Journal Article] Review of superconductivity in BiS2-based layered materials (2015)
  • Author(s): Y. Mizuguchi
  • Journal Title: J. Phys. Chem. Solids Volume: 84 Pages: 34-48
  • DOI: 10.1016/j.jpcs.2014.09.003
  • Peer Reviewed
• [Journal Article] The effect of RE substitution in layered REO0.5F0.5BiS2: chemical pressure, local disorder and superconductivity (2015)
  • Author(s): Y. Mizuguchi, E. Paris, T. Sugimoto, A. Iadecola, J. Kajitani, O. Miura, T. Mizokawa and N. L. Saini
  • Journal Title: Phys. Chem. Chem. Phys. Volume: 17 Issue: 34 Pages: 22090-22096
  • DOI: 10.1039/c5cp03750f
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Evolution of Superconductivity in BiS2-Based Superconductor LaO0.5F0.5Bi(S1-xSex)2 (2015)
  • Author(s): Takafumi Hiroi, Joe Kajitani, Atsushi Omachi, Osuke Miura, Yoshikazu Mizuguchi
  • Journal Title: J. Phys. Soc. Jpn. Volume: 84 Issue: 2 Pages: 024723-024723
  • DOI: 10.7566/jpsj.84.024723
  • NAID: 210000133452
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Coexistence of Bulk Superconductivity and Magnetism in CeO1-xFxBiS2 (2015)
  • Author(s): Satoshi Demura, Keita Deguchi, Yoshikazu Mizuguchi, Kazuki Sato, Ryota Honjyo, Aichi Yamashita, Takuma Yamaki, Hiroshi Hara, Tohru Watanabe, Saleem J. Denholme, Masaya Fujioka, Hiroyuki Okazaki, Toshinori Ozaki, Osuke Miura, Takahide Yamaguchi, Hiroyuki Takeya, Yoshihiko Takano
  • Journal Title: J. Phys. Soc. Jpn. Volume: 84 Issue: 2 Pages: 024709-024709
  • DOI: 10.7566/jpsj.84.024709
  • NAID: 210000133438
  • Peer Reviewed
• [Journal Article] Chemical Pressure Effect on Superconductivity of BiS2-Based Ce1-xNdxO1-yFyBiS2 and Nd1-zSmzO1-yFyBiS2 (2015)
  • Author(s): Joe Kajitani, Takafumi Hiroi, Atsushi Omachi, Osuke Miura, Yoshikazu Mizuguchi
  • Journal Title: J. Phys. Soc. Jpn. Volume: 84 Issue: 4 Pages: 044712-044712
  • DOI: 10.7566/jpsj.84.044712
  • NAID: 210000133526
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Pronounced -Log T Divergence in Specific Heat of Nonmetallic CeOBiS2: A Mother Phase of BiS2-Based Superconductor (2015)
  • Author(s): Ryuji Higashinaka, Takuya Asano, Takuya Nakashima, Kengo Fushiya, Yoshikazu Mizuguchi, Osuke Miura, Tatsuma D. Matsuda, Yuji Aoki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 84 Issue: 2 Pages: 023702-023702
  • DOI: 10.7566/jpsj.84.023702
  • NAID: 210000133418
  • Peer Reviewed
• [Journal Article] Structure, Superconductivity, and Magnetism of Ce(O,F)BiS2 Single Crystals (2015)
  • Author(s): Akira Miura, Masanori Nagao, Takahiro Takei, Satoshi Watauchi, Yoshikazu Mizuguchi, Yoshihiko Takano, Isao Tanaka, Nobuhiro Kumada
  • Journal Title: Cryst. Growth Des. Volume: 15 Issue: 1 Pages: 39-44
  • DOI: 10.1021/cg5005165
  • Peer Reviewed
• [Journal Article] Stabilization of High-Tc Phase of BiS2-Based Superconductor LaO0.5F0.5BiS2 Using High-Pressure Synthesis (2014)
  • Author(s): Y. Mizuguchi, T. Hiroi, J. Kajitani, H. Takatsu, H. Kadowaki, O. Miura
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 5 Pages: 053704-053704
  • DOI: 10.7566/jpsj.83.053704
  • NAID: 210000133063
  • Peer Reviewed
• [Journal Article] Anisotropic upper critical field of the BiS2-based superconductor LaO0.5F0.5BiS2 (2014)
  • Author(s): Yoshikazu Mizuguchi, Atsushi Miyake, Kazuto Akiba, Masashi Tokunaga, Joe Kajitani, Osuke Miura
  • Journal Title: Phys. Rev. B Volume: 89 Issue: 17
  • DOI: 10.1103/physrevb.89.174515
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Discovery of New Layered Phosphide-Chalcogenide Superconductors (2014)
  • Author(s): Yoshikazu Mizuguchi
  • Journal Title: JPSJ News and Comments Volume: 11 Pages: 09-09
  • DOI: 10.7566/jpsjnc.11.09
  • Peer Reviewed
• [Journal Article] Enhancement of thermoelectric properties by Se substitution in layered bismuthchalcogenide LaOBiS2-xSex (2014)
  • Author(s): Yoshikazu Mizuguchi, Atsushi Omachi, Yosuke Goto, Yoichi Kamihara, Masanori Matoba, Takafumi Hiroi, Joe Kajitani, Osuke Miura
  • Journal Title: J. Appl. Phys. Volume: 116 Issue: 16
  • DOI: 10.1063/1.4900953
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Importance of uniaxial compression for the appearance of superconductivity in NdO1-xFxBiS2 (2014)
  • Author(s): A. Omachi, T. Hiroi, J. Kajitani, O. Miura, Y. Mizuguchi
  • Journal Title: J. Phys.: Conf. Ser. Volume: 507 Issue: 1 Pages: 012033-012033
  • DOI: 10.1088/1742-6596/507/1/012033
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Chemical pressure effect on Tc in BiS2-based Ce1-xNdxO0.5F0.5BiS2 (2014)
  • Author(s): Joe Kajitani, Atsushi Omachi, Takafumi Hiroi, Osuke Miura, Yoshikazu Mizuguchi
  • Journal Title: Physica C Volume: 504 Pages: 33-35
  • DOI: 10.1016/j.physc.2014.03.011
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Increase in Tc and Change of Crystal Structure by High-Pressure Annealing in BiS2-Based Superconductor CeO0.3F0.7BiS2 (2014)
  • Author(s): Joe Kajitani, Takafumi Hiroi, Atsushi Omachi, Osuke Miura, Yoshikazu Mizuguchi
  • Journal Title: J. Supercond. Nov. Magn. Volume: 28 Issue: 3 Pages: 1129-1133
  • DOI: 10.1007/s10948-014-2689-7
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Element Substitution Effect on Superconductivity in BiS2-Based NdO1-xFxBiS2 (2014)
  • Author(s): Takafumi Hiroi, Joe Kajitani, Atsushi Omachi, Osuke Miura, Yoshikazu Mizuguchi
  • Journal Title: J. Supercond. Nov. Magn. Volume: 28 Pages: 1149-1153
  • DOI: 10.1007/s10948-014-2852-1
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Enhancement of Tc by Uniaxial Lattice Contraction in BiS2-Based Superconductor PrO0.5F0.5BiS2 (2014)
  • Author(s): Joe Kajitani, Keita Deguchi, Takafumi Hiroi, Atsushi Omachi, Satoshi Demura, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguch
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 6 Pages: 065002-065002
  • DOI: 10.7566/jpsj.83.065002
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Coexistence of ferromagnetism and superconductivity in CeO0.3F0.7BiS2 (2014)
  • Author(s): J. Lee, S. Demura, M. B. Stone, K. Iida, G. Ehlers, C. R. dela Cruz, M. Matsuda, K. Deguchi, Y. Takano, Y. Mizuguchi, O. Miura, D. Louca, S.-H. Lee
  • Journal Title: Phys. Rev. B Volume: 90 Issue: 22
  • DOI: 10.1103/physrevb.90.224410
  • Peer Reviewed
• [Journal Article] Proximity to Fermi-surface topological change in superconducting LaO0.54F0.46BiS2 (2014)
  • Author(s): Kensei Terashima, Junki Sonoyama, Takanori Wakita, Masanori Sunagawa, Kanta Ono, Hiroshi Kumigashira, Takayuki Muro, Masanori Nagao, Satoshi Watauchi, Isao Tanaka, Hiroyuki Okazaki, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguchi, Hidetomo Usui, Katsuhiro Suzuki, Kazuhiko Kuroki, Yuji Muraoka, Takayoshi Yokoya
  • Journal Title: Phys. Rev. B Volume: 90 Issue: 22
  • DOI: 10.1103/physrevb.90.220512
  • NAID: 120005606106
  • Peer Reviewed
• [Journal Article] Determination of local atomic displacements in CeO1－xFxBiS2 system (2014)
  • Author(s): E. Paris, B. Joseph, A. Iadecola, T. Sugimoto, L. Olivi, S. Demura, Y. Mizuguchi, Y. Takano, T. Mizokawa, and N. L. Saini
  • Journal Title: Journal of Physics: Condensed Matter Volume: 26 Issue: 43 Pages: 435701-435701
  • DOI: 10.1088/0953-8984/26/43/435701
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Low-Temperature Enhancement in the Upper Critical Field of Underdoped LaO1-xFxBiS2 (x = 0.1 - 0.3) (2014)
  • Author(s): Ryuji Higashinaka, Ryouichi Miyazaki, Yoshikazu Mizuguchi, Osuke Miura, Yuji Aoki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 7 Pages: 075004-075004
  • DOI: 10.7566/jpsj.83.075004
  • NAID: 210000133201
  • Peer Reviewed
• [Journal Article] "Checkerboard Stripe" Electronic State on Cleaved Surface of NdO0.7F0.3BiS2 Probed by Scanning Tunneling Microscopy (2014)
  • Author(s): Tadashi Machida, Yuita Fujisawa, Masanori Nagao, Satoshi Demura, Keita Deguchi, Yoshikazu Mizuguchi, Yoshihiko Takano, Hideaki Sakata
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 11 Pages: 113701-113701
  • DOI: 10.7566/jpsj.83.113701
  • NAID: 210000133319
  • Peer Reviewed
• [Journal Article] Detection of the flux dynamical regimes in Bi4O4S3 by multiharmonic AC susceptibility (2014)
  • Author(s): D. Mancusi, F. Giubileo, Y. Mizuguchi, S. Pace, M. Polichetti
  • Journal Title: Physica C Volume: 507 Pages: 47-54
  • DOI: 10.1016/j.physc.2014.10.002
  • Peer Reviewed
• [Journal Article] Role of the Ce valence in the coexistence of superconductivity and ferromagnetism of CeO1－xFxBiS2 revealed by Ce L3-edge x-ray absorption spectroscopy (2014)
  • Author(s): T. Sugimoto, B. Joseph, E. Paris, A. Iadecola, T. Mizokawa, S. Demura, Y. Mizuguchi, Y. Takano, and N. L. Saini
  • Journal Title: Physical Review B Rapid Communications Volume: 89 Issue: 20 Pages: 201117-201117
  • DOI: 10.1103/physrevb.89.201117
  • Peer Reviewed
• [Journal Article] Correlation between crystal structure and superconductivity in LaO0.5F0.5BiS2 (2014)
  • Author(s): J. Kajitani, K. Deguchi, A. Omachi, T. Hiroi, Y. Takano, H. Takatsu, H. Kadowaki, O. Miura, Y. Mizuguchi
  • Journal Title: Solid State Commun. Volume: 181 Pages: 1-4
  • DOI: 10.1016/j.ssc.2013.11.027
  • Peer Reviewed
• [Journal Article] High-temperature thermoelectric properties of novel layered bismuth-sulfide LaO1-xFxBiS2 (2014)
  • Author(s): Atsushi Omachi, Joe Kajitani, Takafumi Hiroi, Osuke Miura, Yoshikazu Mizuguchi
  • Journal Title: J. Appl. Phys. Volume: 115 Issue: 8
  • DOI: 10.1063/1.4867186
  • Peer Reviewed
• [Journal Article] Soft x-ray photoemission study of new BiS2-layered superconductor LaO1-xFxBiS2 (2014)
  • Author(s): Shinsuke Nagira, Junki Sonoyama, Takanori Wakita, Masanori Sunagawa, Yudai Izumi, Takayuki Muro, Hiroshi Kumigashira, Masaharu Oshima, Keita Deguchi, Hiroyuki Okazaki, Yoshihiko Takano, Osuke Miura, Yoshikazu Mizuguchi, Katsuhiro Suzuki, Hidetomo Usui, Kazuhiko Kuroki, Kozo Okada, Yuji Muraoka, Takayoshi Yokoya
  • Journal Title: J. Phys. Soc. Jpn. Volume: 83 Issue: 3 Pages: 033703-033703
  • DOI: 10.7566/jpsj.83.033703
  • NAID: 210000132981
  • Peer Reviewed
• [Journal Article] Superconductivity in layered chalcogenides (2014)
  • Author(s): Y. Mizuguchi
  • Journal Title: Wiley Encyclopedia of Electrical and Electronic Engineering Volume: in printing
  • Peer Reviewed
• [Journal Article] Enhancement of Tc by uniaxial lattice contraction in BiS2-based superconductor PrO0.5F0.5BiS2 (2014)
  • Author(s): J. Kajitani, K. Deguchi, T. Hiroi, A. Omachi, S. Demura, Y. Takano, O. Miura, Y. Mizuguchi
  • Journal Title: J. Phys. Soc. Jpn. Volume: in printing
  • NAID: 210000133152
  • Peer Reviewed
• [Journal Article] Stabilization of high-Tc phase of BiS2-based superconductor LaO0.5F0.5BiS2 using high-pressure synthesis (2014)
  • Author(s): Y. Mizuguchi, T. Hiroi, J. Kajitani, H. Takatsu, H. Kadowaki, O. Miura
  • Journal Title: J. Phys. Soc. Jpn. Volume: in printing
  • NAID: 210000133063
  • Peer Reviewed
• [Journal Article] Importance of uniaxial compression for the appearance of superconductivity in NdO1-xFxBiS2 (2014)
  • Author(s): A. Omachi, T. Hiroi, J. Kajitani, O. Miura, Y. Mizuguchi
  • Journal Title: J. Phys.: Conference Series Volume: in printing
  • Peer Reviewed
• [Journal Article] Chemical pressure effect on Tc in BiS2-based Ce1-xNdxO0.5F0.5BiS2 (2014)
  • Author(s): J. Kajitani, A. Omachi, T. Hiroi, O. Miura, Y. Mizuguchi
  • Journal Title: Physica C Volume: in printing
  • Peer Reviewed
• [Journal Article] Superconductivity in BiS2-Based Layered Compounds (2014)
  • Author(s): Y. Mizuguchi
  • Journal Title: Phys. Procedia Volume: in printing
  • Peer Reviewed
• [Journal Article] 新しい層状超伝導体の発見 (2014)
  • Author(s): 水口佳一
  • Journal Title: パリティ Volume: 29 Pages: 28-30
  • Peer Reviewed
• [Journal Article] 3. Observation of an isosceles triangular electronic structure around the excess iron atoms in Fe1+dTe (2013)
  • Author(s): T. Machida, K. Kogure, T. Kato, H. Nakamura, H. Takeya, T. Mochiku, S. Ooi, Y. Mizuguchi, Y. Takano, K. Hirata, H. Sakata
  • Journal Title: Physical Review B Volume: 87 Issue: 21 Pages: 214508-214508
  • DOI: 10.1103/physrevb.87.214508
  • Peer Reviewed
• [Journal Article] s-wave pairing in the optimally-doped LaO0.5F0.5BiS2 superconductor (2013)
  • Author(s): G. Lamura, T. Shiroka, P. Bonfa, S. Sanna, R. De Renzi, C. Baines, H. Luetkens, J. Kajitani, Y. Mizuguchi, O. Miura, K. Deguchi, S. Demura, Y. Takano, M. Putti
  • Journal Title: Phys. Rev. B Volume: 88 Issue: 18
  • DOI: 10.1103/physrevb.88.180509
  • Peer Reviewed
• [Journal Article] Crystal Structure, Lattice Vibrations, and Superconductivity of LaO1－xFxBiS2 (2013)
  • Author(s): J. Lee, M. B. Stone, A. Huq, T. Yildrim, G. Ehlers, Y. Mizuguchi, O. Miura, Y. Takano, K. Deguchi, S. Demura, S.-H. Lee
  • Journal Title: Phys. Rev. B Volume: 87 Issue: 20
  • DOI: 10.1103/physrevb.87.205134
  • Peer Reviewed
• [Journal Article] 新しいBiS2系層状超伝導体の発見 (2013)
  • Author(s): 水口佳一
  • Journal Title: パリティ Volume: 28 Pages: 46-50
  • Peer Reviewed
• [Journal Article] 半導体的な電気伝導の近傍で発現する新しいBiS2系2次元超伝導 (2013)
  • Author(s): 水口佳一
  • Journal Title: 固体物理 Volume: 5 Pages: 237-245
  • Peer Reviewed
• [Presentation] BiS2系超伝導体REO0.5F0.5BiS2-xSexにおけるSe置換効果 (2016)
  • Author(s): 水口佳一
  • Organizer: 日本物理学会第71回年次大会
  • Place of Presentation: 東北学院大学
  • Year and Date: 2016-03-22
• [Presentation] Determination of crystal structure parameter important for the emergence of superconductivity in the BiCh2 family (2015)
  • Author(s): Y. Mizuguchi
  • Organizer: ISS2015
  • Place of Presentation: Tokyo（タワーホール船堀）
  • Year and Date: 2015-11-17
  • Int'l Joint Research
• [Presentation] 層状ビスマスカルコゲナイドにおける超伝導と高熱電性能 (2015)
  • Author(s): 水口佳一
  • Organizer: 第9回物性科学領域横断研究会 凝縮系科学の最前線
  • Place of Presentation: 東京大学
  • Year and Date: 2015-11-13
• [Presentation] Correlation between crystal structure and superconductivity of BiCh2-based layered superconductors (2015)
  • Author(s): Y. Mizuguchi
  • Organizer: TMU International Symposium
  • Place of Presentation: Tokyo(首都大学東京)
  • Year and Date: 2015-09-24
  • Int'l Joint Research
• [Presentation] 層状ビスマスカルコゲナイド超伝導体 (2015)
  • Author(s): 水口佳一
  • Organizer: 日本セラミックス協会 第28回秋季シンポジウム
  • Place of Presentation: 富山大学
  • Year and Date: 2015-09-16
  • Int'l Joint Research
• [Presentation] 層状ビスマスカルコゲナイド超伝導体の開拓と今後の展望 (2015)
  • Author(s): 水口佳一
  • Organizer: 新学術領域J-Physicsキックオフミーティング
  • Place of Presentation: 神戸大学
  • Year and Date: 2015-09-14
• [Presentation] 新しい層状ビスマスカルコゲナイドの熱電特性 (2015)
  • Author(s): 水口佳一
  • Organizer: 日本熱電学会第１２回学術講演会
  • Place of Presentation: 九州大学
  • Year and Date: 2015-09-07
• [Presentation] Relationship between superconducting property and crystal structure in BiS2-based superconductors (2015)
  • Author(s): Y. Mizuguchi
  • Organizer: M2S2015
  • Place of Presentation: Geneva (スイス・ジュネーブ）
  • Year and Date: 2015-08-25
  • Int'l Joint Research
• [Presentation] Superconductivity in Bi-based layered chalcogenides (2015)
  • Author(s): Y. Mizuguchi
  • Organizer: Gordon Research Conference: Unconventional Superconductivity
  • Place of Presentation: Hong Kong （香港中文大学）
  • Year and Date: 2015-05-24
  • Int'l Joint Research / Invited
• [Presentation] BiS2系超伝導体における局所構造変化と超伝導発現 (2015)
  • Author(s): 水口佳一，梶谷丈，廣井貴史，三浦大介，E. Paris，N. L. Saini，杉本拓也，溝川貴司，三浦章
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学（東京）
  • Year and Date: 2015-03-22
• [Presentation] BiS2系超伝導体EuFBiS2のCeによる元素置換効果 (2015)
  • Author(s): 梶谷丈，三浦大介，水口佳一，松田達磨，青木勇二
  • Organizer: 日本物理学会第70回年次大会
  • Place of Presentation: 早稲田大学（東京）
  • Year and Date: 2015-03-22
• [Presentation] Evolution of superconductivity in REOBiS2-type compounds by tuning crystal structure (2015)
  • Author(s): Y. Mizuguchi, J. Kajitani, T. Hiroi, O. Miura, N. L. Saini, A. Miura
  • Organizer: SMEC2015
  • Place of Presentation: マイアミ（アメリカ）
  • Year and Date: 2015-03-08 – 2015-03-15
  • Invited
• [Presentation] Correlation between local crystal structure and physical properties in BiS2-based superconductors (2015)
  • Author(s): Y. Mizuguchi, J. Kajitani, T. Hiroi, O. Miura, N. L. Saini, A. Miura
  • Organizer: APS march meeting 2015
  • Place of Presentation: サンアントニオ（アメリカ）
  • Year and Date: 2015-03-05
• [Presentation] Superconductivity in layered bismuth chalcogenides (2014)
  • Author(s): Y. Mizuguchi
  • Organizer: SuperFox2014
  • Place of Presentation: ローマ（イタリア）
  • Year and Date: 2014-09-24 – 2014-09-26
  • Invited
• [Presentation] BiS2系超伝導体の結晶構造と超伝導特性の相関 (2014)
  • Author(s): 梶谷丈，三浦大介，水口佳一
  • Organizer: 日本物理学会2014年度秋季大会
  • Place of Presentation: 中部大学（愛知）
  • Year and Date: 2014-09-09
• [Presentation] BiS2系、BiSe2系超伝導体の最新情報と可能性 (2014)
  • Author(s): 水口佳一
  • Organizer: 超伝導科学技術研究会 第８４回ワークショップ
  • Place of Presentation: 霞が関全日通ビル（東京）
  • Year and Date: 2014-07-22
  • Invited
• [Presentation] Novel Superconductors with BiS2-Based Layered Structure (2014)
  • Author(s): Y. Mizuguchi
  • Organizer: 4th International Conference on Superconductivity and Magnetism
  • Place of Presentation: アンタルヤ（トルコ）
  • Year and Date: 2014-04-29
• [Presentation] Correlation of the crystal structure and superconducting property in BiS2-based superconductor (2014)
  • Author(s): J. Kajitani. A. Omachi, T. Hiroi, O. Miura, Y. Mizuguchi, H. Takatsu, H. Kadowaki, K. Deguchi, Y. Takano
  • Organizer: 4th International Conference on Superconductivity and Magnetism
  • Place of Presentation: アンタルヤ（トルコ）
  • Year and Date: 2014-04-29
• [Presentation] Evaluating superconducting characteristics and element substitution effect of NdO1-xFxBiS2 (2014)
  • Author(s): T. Hiroi, Y. Mizuguchi, O. Miura
  • Organizer: 4th International Conference on Superconductivity and Magnetism
  • Place of Presentation: アンタルヤ（トルコ）
  • Year and Date: 2014-04-29
• [Presentation] BiS2系層状超伝導体の結晶構造と超伝導特性 (2014)
  • Author(s): 水口佳一
  • Organizer: 日本物理学会 第69回年次大会
  • Place of Presentation: 東海大学（神奈川県）
  • Invited
• [Presentation] BiS2系層状化合物La1-xCexOBiS2の結晶構造と物性 (2014)
  • Author(s): 水口佳一
  • Organizer: 日本物理学会 第69回年次大会
  • Place of Presentation: 東海大学（神奈川県）
• [Presentation] BiS2系超伝導体の高圧合成 (2014)
  • Author(s): 水口佳一
  • Organizer: ＳＩＳ2014（低温工学超伝導学会交流事業）
  • Place of Presentation: シャレー志賀（長野県）
• [Presentation] Structural variations and physical properties of BiS2-based layered superconductors (2013)
  • Author(s): Y. Mizuguchi
  • Organizer: LEMSUPER
  • Place of Presentation: トリエステ、イタリア
  • Invited
• [Presentation] Physical properties of BiS2-based layered superconductors (2013)
  • Author(s): Y. Mizuguchi
  • Organizer: EUCAS 2013
  • Place of Presentation: ジェノバ、イタリア
• [Presentation] 新しいBiS2系層状超伝導体 (2013)
  • Author(s): 水口佳一
  • Organizer: 基研研究会
  • Place of Presentation: 京都大学（京都府）
  • Invited
• [Presentation] BiS2系新超伝導体～ Tc上昇の鍵は？ ～ (2013)
  • Author(s): 水口佳一
  • Organizer: 応用物理学会超伝導分科会
  • Place of Presentation: ＩＳＴＥＣ（東京都）
  • Invited
• [Presentation] Discovery of BiS2-based new superconductors (2013)
  • Author(s): Y. Mizuguchi
  • Organizer: ISS2013
  • Place of Presentation: タワーホール船堀（東京）
  • Invited
• [Presentation] Superconductivity in the Novel BiS2-Based Layered Compounds (2013)
  • Author(s): Y. Mizuguchi
  • Organizer: NS2-2013
  • Place of Presentation: グランドホール（東京都）
• [Remarks] 首都大学東京超伝導応用工学研究室ホームページ
  • URL: http://www.comp.tmu.ac.jp/eeesuper/activities.html
• [Remarks] 首都大学東京 電気電子工学専攻 超伝導応用工学研究室 ホームページ
  • URL: http://www.comp.tmu.ac.jp/eeesuper/
• [Patent(Industrial Property Rights)] 層状ビスマスカルコゲナイド系熱電変換材料 (2014)
  • Inventor(s): 水口佳一，三浦大介，神原陽一，的場正憲，後藤陽介
  • Industrial Property Rights Holder: 首都大学東京
  • Industrial Property Rights Type: 特許
  • Industrial Property Number: 2014-181827
  • Filing Date: 2014-09-08