Characteristic Fermi Surfaces in Cubic Compounds

• Project Area: J-Physics: Physics of conductive multipole systems
• Project/Area Number: 16H01078
• Research Category: Grant-in-Aid for Scientific Research on Innovative Areas (Research in a proposed research area)
• Allocation Type: Single-year Grants
• Review Section: Science and Engineering
• Research Institution: University of the Ryukyus
• Principal Investigator: 大貫 惇睦 琉球大学, 理学部, 客員教授 (40118659)
• Project Period (FY): 2016-04-01 – 2018-03-31
• Project Status: Completed (Fiscal Year 2017)
• Budget Amount: ¥8,450,000 (Direct Cost: ¥6,500,000、Indirect Cost: ¥1,950,000); Fiscal Year 2017: ¥4,290,000 (Direct Cost: ¥3,300,000、Indirect Cost: ¥990,000); Fiscal Year 2016: ¥4,160,000 (Direct Cost: ¥3,200,000、Indirect Cost: ¥960,000)
• Keywords: フェルミ面 / ドハース・アルフェン (dHvA) 効果 / バンド計算 / 蛍石型化合物 / パイライト型化合物 / ウルマナイト型化合物 / 結晶反転対称性の破れ / カイラル構造 / 立方晶化合物 / 純良単結晶育成 / ドハース・ファンアルフェン効果 / スピンフラストレーション

Outline of Annual Research Achievements

蛍石型化合物 AuAl2，AuGa2，AuIn2 の順良単結晶をブリッジマン法で育成し，dHvA 効果の実験を行った。実験結果は J-Physics の代表者の播磨尚朝氏のバンド計算結果と 90% 以上一致していたが，小さなフェルミ面に差異があった。
次にパイライト型化合物に関しては，J-Physics メンバーの松田達磨氏との共同研究で CuS2 と CuSe2 の高温高圧下での単結晶育成にチャレンジした。両化合物とも良質な単結晶で，残留抵抗比 RRR = 100 であった。フェルミ面の性質が明らかになった。
更にウルマナイト NiSbS と荷電子数が同じパイライト型のAuSb2 の純良単結晶育成にも成功した。AuSb2 のフェルミは NiSbS のフェルミ面に良く似ていて，NiSbS では結晶反転対称性の破れを反映して，４種類のそれぞれのフェルミ面が２つに分裂していることが明らかにされた。
ウルマナイト型化合物では，前述の NiSbS 以外に反強磁性体 EuPtSi の純良単結晶育成に成功し，J-Physics メンバーの榊原俊郎氏の協力の下で磁気的性質が明らかにされつつある。カイラル構造に基づくスピンフラストレーションを反映して，ネール点は 4.05 K と低く，しかも１次に近い相転移であった。更に興味深いことには，反強磁性相の中に閉じた磁気相が存在することを見出し，同じ結晶構造でスカーミオンとして知られる MnSi に因んで，A相と名付けた。この A相で磁化に関係な異常ホール抵抗以外の新たなホール抵抗が見出された。現在 A相を明らかにすべく J-Physics メンバーの協力の下，中性子散乱，共鳴X線散乱，NMR等の実験が行われている。

Research Progress Status

29年度が最終年度であるため、記入しない。

Strategy for Future Research Activity

29年度が最終年度であるため、記入しない。

Research Products

• [Int'l Joint Research] フランス原子力庁(フランス)
• [Int'l Joint Research] フランス原子力庁(フランス)
• [Journal Article] Giant Hall Resistivity and Magnetoresistance in Cubic Chiral Antiferromagnet EuPtSi (2018)
  • Author(s): Kakihana Masashi、Aoki Dai、Nakamura Ai、Honda Fuminori、Nakashima Miho、Amako Yasushi、Nakamura Shota、Sakakibara Toshiro、Hedo Masato、Nakama Takao、Onuki Yoshichika
  • Journal Title: Journal of the Physical Society of Japan Volume: 87 Issue: 2 Pages: 023701-023701
  • DOI: 10.7566/jpsj.87.023701
  • NAID: 40021463195
  • Peer Reviewed / Open Access
• [Journal Article] Fermi Surface and Magnetic Properties in Ferromagnet CoS 2 and Paramagnet CoSe 2 with the Pyrite-type Cubic Structure (2017)
  • Author(s): A. Teruya, F. Suzuki, D. Aoki, F. Honda, A. Nakamura, M. Nakashima, Y. Amako, H. Harima, K. Uchima, M. Hedo, T. Nakama, and Y. Onuki
  • Journal Title: J. Phys.: Conf. Ser. Volume: 807 Pages: 012001-012001
  • DOI: 10.1088/1742-6596/807/1/012001
  • Peer Reviewed
• [Journal Article] Pressure Evolution of Characteristic Electronic States in EuRh2Si2and EuNi2Ge2 (2017)
  • Author(s): Honda Fuminori、Okauchi Keigo、Nakamura Ai、Aoki Dai、Akamine Hiromu、Ashitomi Yousuke、Hedo Masato、Nakama Takao、?nuki Yoshichika
  • Journal Title: Journal of Physics: Conference Series Volume: 807 Pages: 022004-022004
  • DOI: 10.1088/1742-6596/807/2/022004
  • Peer Reviewed
• [Journal Article] Single Crystal Growth and Superconductivity in La7Ni3 without Inversion Symmetry in the Crystal Structure (2017)
  • Author(s): Nakamura Ai、Honda Fuminori、Homma Yoshiya、Li Dexin、Nishimura Kengo、Kakihana Masashi、Hedo Masato、Nakama Takao、?nuki Yoshichika、Aoki Dai
  • Journal Title: Journal of Physics: Conference Series Volume: 807 Pages: 052012-052012
  • DOI: 10.1088/1742-6596/807/5/052012
  • Peer Reviewed
• [Journal Article] Unique Electronic States in Non-centrosymmetric Cubic Compounds (2017)
  • Author(s): M. Kakihana, K. Nishimura, Y. Ashitomi, T. Yara, D. Aiki, A. Nakamura, F. Honda, M. Nakashima, Y. Amako, Y. Uwatoko, T. Sakakibara, S. Nakamura, T. Takeuchi, Y. Haga, E. Yamamoto, H. Harima, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: Journal of ELECTRONIC MATERIALS Volume: - Issue: 6 Pages: 1-13
  • DOI: 10.1007/s11664-016-5265-z
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] NMR studies of the incommensurate helical antiferromagnet EuCo2P2: Determination of antiferromagnetic propagation vector (2017)
  • Author(s): Higa Nonoka、Ding Qing-Ping、Yogi Mamoru、Sangeetha N. S.、Hedo Masato、Nakama Takao、?nuki Yoshichika、Johnston D. C.、Furukawa Yuji
  • Journal Title: Physical Review B Volume: 96 Issue: 2 Pages: 024405-024405
  • DOI: 10.1103/physrevb.96.024405
  • Peer Reviewed
• [Journal Article] Divalent, trivalent, and heavy fermion states in Eu compounds (2017)
  • Author(s): Onuki Y.、Nakamura A.、Honda F.、Aoki D.、Tekeuchi T.、Nakashima M.、Amako Y.、Harima H.、Matsubayashi K.、Uwatoko Y.、Kayama S.、Kagayama T.、Shimizu K.、Esakki Muthu S.、Braithwaite D.、Salce B.、Shiba H.、Yara T.、Ashitomi Y.、Akamine H.、Tomori K.、Hedo M.、Nakama T.
  • Journal Title: Philosophical Magazine Volume: 97 Issue: 36 Pages: 3399-3414
  • DOI: 10.1080/14786435.2016.1218081
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Unique Pressure versus Temperature Phase Diagram for Antiferromagnets Eu2Ni3Ge5 and EuRhSi3 (2017)
  • Author(s): M. Nakashima, Y. Amako, K. Matsubayashi, Y. Uwatoko, M. Nada, K. Sugiyama, M. Hagiwara, Y. Haga, T. Takeuchi, A. Nakamura, H. Akamine, K. Tomori, T. Yara, Y. Ashitomi, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 86 Issue: 3 Pages: 034708-14
  • DOI: 10.7566/jpsj.86.034708
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Pressure-Induced Valence Transition and Characteristic Electronic States in EuRh2Si2 (2016)
  • Author(s): F. Honda, K. Okauchi, A. Nakamura, D. X. Li, D. Aoki, H. Akamine, Y. Ashitomi, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 6 Pages: 063701-5
  • DOI: 10.7566/jpsj.85.063701
  • NAID: 210000133948
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Large Cyclotron Mass and Large Ordered Moment in Ferromagnet CoS2 Compared with Paramagnet CoSe2 (2016)
  • Author(s): A. Teruya, F. Suzuki, D. Aoki, F. Honda, A. Nakamura, M. Nakashima, Y. Amako, H. Harima, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 6 Pages: 064716-10
  • DOI: 10.7566/jpsj.85.064716
  • NAID: 210000133978
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Magnetic and Fermi Surface Properties of Ferromagnets EuPd2 and EuPt2 (2016)
  • Author(s): A. Nakamura, H. Akamine, Y. Ashitomi, F. Honda, D. Aoki, T. Takeuchi, Tetsuya, K. Matsubayashi, Y. Uwatoko, Y. Tatetsu, T. Maehira, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 8 Pages: 084705-7
  • DOI: 10.7566/jpsj.85.084705
  • NAID: 210000134040
  • Peer Reviewed / Acknowledgement Compliant
• [Journal Article] Calorimetry Study of the Phase Diagrams of EuNi2Ge2 and Eu2Ni3Ge5 under Pressure (2016)
  • Author(s): S. Esakki Muthu, D. Braithwaite, B. Salce, A. Nakamura, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 9 Pages: 094603-5
  • DOI: 10.7566/jpsj.85.094603
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Journal Article] Superconducting, Fermi surface, and magnetic properties in SrTGe3 and EuTGe3 (T: transition metal) with the Rashba-type tetragonal structure (2016)
  • Author(s): M. Kakihana, H. Akamine, K. Tomori, K. Nishimura, A. Teruya, A. Nakamura, F. Honda, D. Aoki, M. Nakashima, Y. Amako, K. Matsubayashi, Y. Uwatoko, T. Takeuchi, T. Kida, M. Hagiwara, Y. Haga, E. Yamamoto, H. Harima, M. Hedo, T. Nakama, Y. Onuki
  • Journal Title: Journal of Alloys and Compounds Volume: 694 Pages: 439-451
  • DOI: 10.1016/j.jallcom.2016.09.287
  • Peer Reviewed / Int'l Joint Research / Acknowledgement Compliant
• [Presentation] Magnetic properties and effect of pressure on the electronic state of EuCo2Ge2 (2017)
  • Author(s): Y. Ashitomi, F. Honda, A. Nakamura, D. Aoki, Y. Uwatoko, M. Nakashima, Y. Amako, T. Takeuchi, T. Kida, T. Tahara, M. Hagiwara, Y. Haga, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2017)
  • Int'l Joint Research
• [Presentation] Fermi surfaces of the pyrite-type cubic AuSb2 compared with split Fermi surfaces of the ullmannite-type cubic chiral NiSbS and PdBiSe (2017)
  • Author(s): K. Nishimura, M. Kakihana, A. Nakamura, D. Aoki, H. Harima, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2017)
  • Int'l Joint Research
• [Presentation] Fermi surfaces properties of AuAl2, AuGa2, and AuIn2 with the CaF2-type cubic structure (2017)
  • Author(s): K. Nishimura, M. Kakihana, F. Suzuki, T. Yara, M. Hedo, T. Nakama, Y. Onuki, H. Harima
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2017)
  • Int'l Joint Research
• [Presentation] Small Fermi surfaces of PtSn4 and Pt3In7 (2017)
  • Author(s): T. Yara, M. Kakihana, K. Nishimura, M. Hedo, T. Nakama, Y. Onuki, H. Harima
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2017)
  • Int'l Joint Research
• [Presentation] 反強磁性金属FeSn2の磁気輸送物性 (2017)
  • Author(s): 木田孝則，田原大夢，垣花将司，辺土正人，仲間隆男，大貫惇睦，萩原政幸
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] CuS2とCuSe2のドハース・ファンアルフェン効果による電子状態の研究 (2017)
  • Author(s): 仲間隆男，垣花将司，岸本美晴，山田瑛，東中隆二，松田達磨，青木勇二，播磨尚朝，竹内徹也，辺土正人，大貫惇睦
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 純良単結晶MnPの電子状態の研究 (2017)
  • Author(s): 川勝祥矢，垣花将司，中島美帆，天児寧，青木大，仲村愛，竹内徹也，播磨尚朝，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] トリリウム格子磁性体EuPtSiの極低温磁化の方向依存性 (2017)
  • Author(s): 中村翔太，榊原俊郎，安次富洋介，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] FeSn, FeSn2と関連する化合物の電子状態 (2017)
  • Author(s): 垣花将司，西村健吾，中島美帆，天児寧，仲村愛，青木大，竹内徹也，田原大夢，木田孝則，萩原政幸，播磨尚朝，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会2017年秋季大会
• [Presentation] 立方晶キラル反強磁性体EuPtSiの巨大なホール効果と磁気抵抗 (2017)
  • Author(s): 垣花将司，伊覇航，安次富洋介，青木大，仲村愛，本多史憲，中島美帆，天児寧，中村翔太，榊原俊郎，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] 立方晶キラル反強磁性体EuPtSiと関連する化合物での新しい磁性相 (2017)
  • Author(s): 大貫惇睦，垣花将司，青木大，仲村愛，本多史憲，中島美帆，天児寧，中村翔太，榊原俊郎，辺土正人，仲間隆男
  • Organizer: 日本物理学会第73回年次大会
• [Presentation] Unique Electronic States in Non-centrosymmetric Cubic Compounds (2016)
  • Author(s): M. Kakihana, K. Nishimura, Y. Ashitomi, T. Yara, D. Aoki, A. Nakamura, F. Honda, M. Nakashima, Y. Amako, Y. Uwatoko, T. Sakakibara, S. Nakamura, T. Takeuchi, Y. Haga, E. Yamamoto, H. Harima, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: International Workshop on Advanced Materials and Nanotechnology 2016 (IWAMN 2016)
  • Place of Presentation: Hanoi (Vietnam)
  • Year and Date: 2016-11-05
  • Int'l Joint Research / Invited
• [Presentation] 立方晶カイラル構造EuPtSiとEuPtGeの磁性 (2016)
  • Author(s): 安次富洋介，中島美帆，天児寧，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学 角間キャンパス（石川県金沢市）
  • Year and Date: 2016-09-16
• [Presentation] EuCo2Ge2の磁性と圧力効果 (2016)
  • Author(s): 大貫惇睦，安次富洋介，本多史憲，上床美也，中島美帆，天児寧，竹内徹也，木田孝則，萩原政幸，辺土正人，仲間隆男
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学 角間キャンパス（石川県金沢市）
  • Year and Date: 2016-09-16
• [Presentation] CoS2,CoSe2,及びその混晶系の単結晶育成と磁性 (2016)
  • Author(s): 鈴木史記，照屋淳志，垣花将司，播磨尚朝，内間清晴，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学 角間キャンパス（石川県金沢市）
  • Year and Date: 2016-09-15
• [Presentation] 光沢の異なるAuAl2，AuGa2，AuIn2のドハース・ファンアルフェン効果とフェルミ面 (2016)
  • Author(s): 西村健吾，垣花将司，鈴木史記，屋良朝之，播磨尚朝，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会2016年秋季大会
  • Place of Presentation: 金沢大学 角間キャンパス（石川県金沢市）
  • Year and Date: 2016-09-15
• [Presentation] Divalent, Trivalent, Intermediate, and Heavy Fermion Properties in Eu Compounds (2016)
  • Author(s): Y. Onuki, A. Nakamura, F. Honda, T. Takeuchi, M. Nakashima, Y. Amako, H. Harima, K. Matsubayashi, Y. Uwatoko, S. Kayama, T. Kagayama, K. Shimizu, H. Akamine, K. Tomori, Y. Ashitomi, T. Yara, M. Hedo, T. Nakama
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2016)
  • Place of Presentation: Hangzhou (China)
  • Year and Date: 2016-06-13
  • Int'l Joint Research / Invited
• [Presentation] Fermi Surface and Magnetic Properties in Ferromagnet CoS2 and Paramagnet CoSe2 with the Pyrite-type Cubic Structure (2016)
  • Author(s): A. Teruya, F. Suzuki, D. Aoki, F. Honda, A. Nakamura, H. Harima, K. Uchima, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2016)
  • Place of Presentation: Hangzhou (China)
  • Year and Date: 2016-06-11
  • Int'l Joint Research
• [Presentation] Single Crystal Growth and Superconductivity in Th7Ni3 and La7Ni3 without Inversion Symmetry in the Crystal Structure (2016)
  • Author(s): A. Nakamura, F. Honda, Y. Homma, D. X. Li, D. Aoki, K. Nishimura, M. Kakihana, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2016)
  • Place of Presentation: Hangzhou (China)
  • Year and Date: 2016-06-10
  • Int'l Joint Research
• [Presentation] Pressure Evolution of Characteristic Electronic States in EuRh2Si2 and related compounds (2016)
  • Author(s): F. Honda, K. Okauchi, A. Nakamura, D.X. Li, D. Aoki, H.Akamine, Y. Ashitomi, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2016)
  • Place of Presentation: Hangzhou (China)
  • Year and Date: 2016-06-10
  • Int'l Joint Research