Probing quantum critical phenomena driven by diverse order parameter via complementary use of quantum beams

• Project/Area Number: 16K05031
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Multi-year Fund
• Section: 一般
• Research Field: Quantum beam science
• Research Institution: Japan Atomic Energy Agency
• Principal Investigator: Kaneko Koji 国立研究開発法人日本原子力研究開発機構, 原子力科学研究部門 原子力科学研究所 物質科学研究センター, 研究主幹 (30370381)
• Project Period (FY): 2016-10-21 – 2020-03-31
• Project Status: Completed (Fiscal Year 2019)
• Budget Amount: ¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000); Fiscal Year 2019: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2018: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2017: ¥1,950,000 (Direct Cost: ¥1,500,000、Indirect Cost: ¥450,000); Fiscal Year 2016: ¥1,820,000 (Direct Cost: ¥1,400,000、Indirect Cost: ¥420,000)
• Keywords: 中性子散乱 / 放射光 / 強相関物性 / 量子臨界現象 / 磁気スキルミオン / 放射光実験 / 磁気スキルミオン格子 / 量子ビーム / 強相関電子系 / 国際協力 / 物性実験 / 強関電子系

Outline of Final Research Achievements

Various order parameters, such as magnetism and lattice, and their coupling can give rise to novel quantum phenomena in the vicinity of a critical point. In this study, neutron and synchrotron x-ray were complementary used to get microscopic insights into these novel phenomena. In YbRh2Si2, prototypical compound showing a magnetic driven quantum critical point (QCP), new type of magnetic order parameter was revealed in the slightly Co doped sample near QCP. In (Ca,Sr)3T4Sn13, non-magnetic lattice driven QCP was evidenced by phonon spectroscopies. And EuPtSi, a formation of magnetic skyrmion lattice in f-electron compound is identified near the critical region under magnetic fields, and its unique characteristics such as short periodicity and magnetic anisotropy were revealed. In overall, new type of static and dynamical responses were characterized near the critical point.

Academic Significance and Societal Importance of the Research Achievements

本課題では，中性子と放射光X線，各々の特徴を活かし，磁性や格子により引き起こされる臨界点近傍の特徴的な振る舞いを微視的に明らかにした．これらの情報は，量子ビームプローブでのみ得られるもので，他の実験結果や理論的な研究の進展に有益な成果が得られた．また実験は，J-PARCやSPring-8などの大型施設を相補的に駆使して実施したもので，先端施設の有用性を示す意味でも有意義な成果であったと言える．

Research Products

• [Int'l Joint Research] Oak Ridge National Laboratory(米国)
• [Int'l Joint Research] Chinese University of Hong Kong(中国)
• [Int'l Joint Research] MPl for Chemical Physics of Solids(ドイツ)
• [Int'l Joint Research] CEA-Grenoble(フランス)
• [Int'l Joint Research] Oak Ridge National Laboratory(米国)
• [Int'l Joint Research] MPI-CPfS/Helmholtz Zentrum Berlin(ドイツ)
• [Int'l Joint Research] The Chinese University of Hong Kong(中国)
• [Int'l Joint Research] Institut Laue-Langevin/CEA(フランス)
• [Int'l Joint Research] Oak Ridge National Laboratory(米国)
• [Int'l Joint Research] MPI for Chemical Physics of Solids(Germany)
• [Int'l Joint Research] Institut Laue Langevin/CEA(France)
• [Int'l Joint Research] The Chinese University of Hong Kong(China)
• [Int'l Joint Research] MPI for Chemical Physics of Solids/Helmholtz-Zentrum Berlin/Goethe University Frankfurt(Germany)
• [Int'l Joint Research] CEA-Grenoble/Institut Laue-Langevin(France)
• [Int'l Joint Research] Oak Ridge National Laboratory(米国)
• [Int'l Joint Research] ISIS Rutherford Appleton Laboratory(United Kingdom)
• [Int'l Joint Research] Chinese University of Hong Kong(China)
• [Int'l Joint Research]
• [Journal Article] Nature of Structural Instabilities in Superconducting Sr3Ir4Sn13 (2020)
  • Author(s): Kaneko Koji、Cheung Yiu Wing、Hu Yajian、Imai Masaki、Tanioku Yasuaki、Kanagawa Hibiki、Murakawa Joichi、Moriyama Kodai、Zhang Wei、Lai Kwing To、Matsuda Masaaki、Yoshimura Kazuyoshi、Tsutsui Satoshi、Goh Swee Kuan
  • Journal Title: JPS Conf. Proc. Volume: 30 Pages: 011032-011032
  • DOI: 10.7566/jpscp.30.011032
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Multi-Step Magnetic Transitions in EuNiIn4 (2020)
  • Author(s): S. Ikeda, K. kneko, Y. Tanaka, T. Kawasaki, T. Hanashima, K. Munakata, A. Nakao, R. Kiyanagi, T. Ohhara, K. Mochizuki, A. Kondo, K. Kindo, Y. Homma, M. D. Frontzek, H. Kobayashi
  • Journal Title: J. Phys. Soc. Jpn. Volume: 89 Issue: 1 Pages: 014707-014707
  • DOI: 10.7566/jpsj.89.014707
  • NAID: 210000157872
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] muSR and Neutron Scattering Studied on Possible Partially-Disordered Magnetic State Coexisting with Heavy Quasiparticles in SmPt2Si2 (2020)
  • Author(s): Naoki Nakamura, Ryuji Higashinaka, Kengo Fushiya, Ryo Tsubota, Takashi U. Ito, Wataru Higemoto, Akiko Nakao, Ryoji Kiyanagi, Takashi Ohhara, Koji Kaneko, Tatsuma D. Matsuda, and Yuji Aoki
  • Journal Title: J. Phys. Soc. Cof. Volume: 29 Pages: 12009-12009
  • DOI: 10.7566/jpscp.29.012009
  • Peer Reviewed / Open Access
• [Journal Article] Unique Helical Magnetic Order and Field-Induced Phase in Trillium Lattice Antiferromagnet EuPtSi (2019)
  • Author(s): Kaneko Koji、Frontzek Matthias D.、Matsuda Masaaki、Nakao Akiko、Munakata Koji、Ohhara Takashi、Kakihana Masashi、Haga Yoshinori、Hedo Masato、Nakama Takao、Onuki Yoshichika
  • Journal Title: Journal of the Physical Society of Japan Volume: 88 Issue: 1 Pages: 013702-013702
  • DOI: 10.7566/jpsj.88.013702
  • NAID: 40021772136
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Magnetic Field Induced Triple-q Magnetic Order in Trillium Lattice Antiferromagnet EuPtSi Studied by Resonant X-ray Scattering (2019)
  • Author(s): Tabata Chihiro、Matsumura Takeshi、Nakao Hironori、Michimura Shinji、Kakihana Masashi、Inami Toshiya、Kaneko Koji、Hedo Masato、Nakama Takao、Onuki Yoshichika
  • Journal Title: Journal of the Physical Society of Japan Volume: 88 Issue: 9 Pages: 093704-093704
  • DOI: 10.7566/jpsj.88.093704
  • NAID: 40022008716
  • Peer Reviewed
• [Journal Article] Study on use of superconducting magnet and first inelastic neutron scattering experiment under magnetic field at 4SEASONS spectrometer (2019)
  • Author(s): Kajimoto Ryoichi、Ishikado Motoyuki、Kira Hiroshi、Kaneko Koji、Nakamura Mitsutaka、Kamazawa Kazuya、Inamura Yasuhiro、Ikeuchi Kazuhiko、Iida Kazuki、Murai Naoki、Ohira-Kawamura Seiko、Takahashi Ryuta、Aoyama Kazuhiro、Kambara Wataru
  • Journal Title: Physica B: Condensed Matter Volume: 556 Pages: 26-30
  • DOI: 10.1016/j.physb.2018.11.065
  • NAID: 120007153035
  • Peer Reviewed
• [Journal Article] 4f電子系化合物EuPtSiにおける磁気スキルミオン (2019)
  • Author(s): 金子耕士，垣花将司，辺土正人，仲間隆男，大貫惇睦
  • Journal Title: 固体物理 Volume: 54 Pages: 757-766
  • NAID: 40022104649
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Evidence of a structural quantum critical point in (CaxSr1?x)3Rh4Sn13 from a lattice dynamics study (2018)
  • Author(s): Cheung Y. W.、Hu Y. J.、Imai M.、Tanioku Y.、Kanagawa H.、Murakawa J.、Moriyama K.、Zhang W.、Lai K. T.、Yoshimura K.、Grosche F. M.、Kaneko K.、Tsutsui S.、Goh Swee K.
  • Journal Title: Physical Review B Volume: 98 Issue: 16
  • DOI: 10.1103/physrevb.98.161103
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Retreat from Stress: Rattling in a Planar Coordination (2018)
  • Author(s): Koichiro Suekuni, Chul Ho Lee, Hiromi I. Tanaka, Eiji Nishibori, Atsushi Nakamura, Hidetaka Kasai, Hidetomo Usui, Masayuki Ochi, Takumi Hasegawa, Mitsutaka Nakamura, Seiko Ohira‐Kawamura, Tatsuya Kikuchi, Koji Kaneko, Hirotaka Nishiate, Katsuaki Hashikuni, Yasufumi Kosaka, Kazuhiko Kuroki, Toshiro Takabatake, 他1名
  • Journal Title: Advanced Materials Volume: 30 Issue: 13 Pages: 1706230-1706230
  • DOI: 10.1002/adma.201706230
  • Peer Reviewed
• [Journal Article] Inelastic X-ray scattering of RT Al 3 ( R = La, Ce, T = Cu, Au) (2018)
  • Author(s): Tsutsui Satoshi、Kaneko Koji、Pospisil Jiri、Haga Yoshinori
  • Journal Title: Physica B: Condensed Matter Volume: 536 Pages: 24-27
  • DOI: 10.1016/j.physb.2017.09.087
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Second-order Structural Transition in (Ca0.5Sr0.5)3Rh4Sn13 (2017)
  • Author(s): Y. W. Cheung, Y. J. Hu, S. K. Goh, K. Kaneko, S. Tsutsui, P. W. Logg, F. M. Grousch, H. Kanagawa, Y. Tanioku, M. Imai, T. Matsumoto, K. Yoshimura
  • Journal Title: J. Phys. Conf. Ser. Volume: 807 Pages: 0320021-4
  • DOI: 10.1088/1742-6596/807/3/032002
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Second-order structural transition in the superconductor La3Co4Sn13 (2016)
  • Author(s): Y. W. Cheung, J. Z. Zhang, J. Y. Zhu, W. C. Yu, Y. J. Hu, D. G. Wang, Y. Otomo, K. Iwasa, K. Kaneko, M. Imai, H. Kanagawa, K. Yoshimura, S. K. Goh
  • Journal Title: Phys. Rev. B Volume: 93 Issue: 24
  • DOI: 10.1103/physrevb.93.241112
  • Peer Reviewed / Open Access / Int'l Joint Research
• [Journal Article] Unique magnetic structure of YbCo2Si2 (2016)
  • Author(s): N. Mufti, K. Kaneko, A. Hoser, M. Gutmann, C. Geibel, C. Krellner, O. Stockert
  • Journal Title: Phys. Rev. B Volume: 94 Issue: 4 Pages: 0451161-8
  • DOI: 10.1103/physrevb.94.045116
  • Peer Reviewed / Int'l Joint Research
• [Journal Article] Magnetic structure of divalent europium compound EuGa4 studied by single crystal time-of-flight neutron diffraction (2016)
  • Author(s): T. Kawasaki, K. Kaneko, A. Nakamura, N. Aso, M. Hedo, T. Nakama, T. Ohhara, R. Kiyanagi, K. Oikawa, I. Tamura, A. Nakao, K. Munakata, T. Hanashima and Y. Onuki
  • Journal Title: J. Phys. Soc. Jpn. Volume: 85 Issue: 11 Pages: 114711-114715
  • DOI: 10.7566/jpsj.85.114711
  • NAID: 210000134159
  • Peer Reviewed / Open Access
• [Presentation] JRR-3 装置群を活用した強相関電子系研究の再稼働 ~J-PARCとの相補性~ (2020)
  • Author(s): 金子耕士
  • Organizer: 日本物理学会 第75回年次大会 シンポジウム
• [Presentation] 中性子散乱でみるEuPtSi のA相およびその異方性 (2020)
  • Author(s): 金子耕士, 田端千紘, 大石一城, 伊藤孝, 中尾裕則, Matthias D. Frontzek, 松田雅昌, 宗像孝司, 中尾朗子, 大原高志, 垣花将司, 芳賀芳範, 辺土正人, 仲間隆男, 大貫惇睦
  • Organizer: 日本物理学会 第75回年次大会
• [Presentation] Skyrmion lattice in 4f-electron magnet EuPtSi: neutron scattering study (2019)
  • Author(s): Koji Kaneko, Matthias D. Frontzek, Masaaki Matsuda, Takashi U. Ito, Kazuki Ohishi, Akiko Nakao, Koji Munakata, Takashi Ohhara, Masashi Kakihana, Yoshinori Haga, Masato Hedo, Takao Nakama, and Yoshichika Onuki
  • Organizer: J-Physics 2019 International Conference
  • Int'l Joint Research / Invited
• [Presentation] First experiments at WAND2 & JRR-3 and J-PARC instrument suite (2019)
  • Author(s): Koji Kaneko
  • Organizer: WAND2 - complementarity and synergy effects with the JRR-3 instrument suite
  • Int'l Joint Research / Invited
• [Presentation] Probing the A phase of EuPtSi by neutron scattering (2019)
  • Author(s): K. Kaneko, C. Tabata, K. Ohishi, T. U. Ito, H. Nakao, M. D. Frontzek，M. Matsuda，K. Munakata，A. Nakao，T. Ohhara, M. Kakihana，Y. Haga，M. Hedo，T. Nakama，Y. Onuki
  • Organizer: J-Physics Annual Meeting FY2019
  • Invited
• [Presentation] JRR-3の現状と展望 (2019)
  • Author(s): 金子耕士
  • Organizer: 23rd CROSSroads Workshop 「量子ビーム実験施設における試料環境」
  • Invited
• [Presentation] Power of new 2D-PSD of WAND2 (2019)
  • Author(s): Koji Kaneko, Matthias D. Frontzek, S. Ikeda, M. Kakihana, M. Hedo, T. Nakama, Y. Onuki
  • Organizer: 2019 Neutron Scattering User Meeting, Oak Ridge National Laboratory
  • Int'l Joint Research
• [Presentation] 多次元化した新広角中性子回折装置 WAND2 (2019)
  • Author(s): 金子 耕士, Matthias D. Fronzek , 深澤 裕, 脇本 秀一, 加倉井 和久
  • Organizer: 東北大金研-CROSSワークショップ「J-PARCとJRR-3の相補利用による偏極中性子科学の新展開」
• [Presentation] Nature of structural instabilities in superconducting (Ca,Sr)3T4Sn13 (T=Rh, Ir) (2019)
  • Author(s): Koji Kaneko, Yiu Wing Cheung, Yajian Hu, Masaki Imai, Yasuaki Tanioku, Hibiki Kanagawa, Joichi Murakawa, Kodai Moriyama, Wei Zhang, Kwing T. Lai, Masaaki Matsuda, Kazuyoshi Yoshimura, Satoshi Tsutsui, Swee K. Goh
  • Organizer: International Conference on Strongly Correlated Electron Systems 2019
  • Int'l Joint Research
• [Presentation] Skyrmion lattice in f-electron magnet EuPtSi (2019)
  • Author(s): K. Kaneko
  • Organizer: “Topological Phases and Functionality of Correlated Electron Systems” (TPFC2019)
  • Int'l Joint Research / Invited
• [Presentation] 中性子散乱でみるEuPtSi のキラル反強磁性と磁場誘起秩序 (2019)
  • Author(s): 金子耕士
  • Organizer: 日本物理学会第７４回年次大会
• [Presentation] キラル反強磁性体EuPtSi の中性子散乱 (2019)
  • Author(s): 金子耕士, Matthias D. Frontzek, 松田雅昌, 大石一城, 中尾朗子, 宗像孝司, 大原高志, 垣花将司, 芳賀芳範, 辺土正人, 仲間隆男, 大貫惇睦
  • Organizer: 日本物理学会第７４回年次大会
• [Presentation] Systematic neutron scattering study on Eu intermetallics (2018)
  • Author(s): K. Kaneko
  • Organizer: Present and Future of Neutron Scattering Research on Condensed Matter Physics ~Future Perspective of US-Japan Cooperative Program on Neutron Scattering~
  • Int'l Joint Research / Invited
• [Presentation] Status and news from JRR-3 (2018)
  • Author(s): K. Kaneko
  • Organizer: 10th International Workshop on Sample Environment at Scattering Facilities
  • Int'l Joint Research / Invited
• [Presentation] 中性子散乱で見るEuPtSiの磁気構造と磁場応答 (2018)
  • Author(s): 金子耕士, 池田修悟, Matthias D. Frontzek, Huibo Cao, 花島隆泰, 中尾朗子, 鬼柳亮嗣, 大原高志, 小林寿夫, 山上浩志
  • Organizer: J-Physics：多極子伝導系の物理」 Tropical Topical Meeting “カイラル磁性体EuPtSiの電子物性 ―研究の現状と今後の展開―”
  • Invited
• [Presentation] MLFにおける強磁場・低温環境への期待 (2018)
  • Author(s): 金子耕士
  • Organizer: Direction2018: the user group meeting on MLF spectrometers
  • Invited
• [Presentation] 立方晶キラル反強磁性体EuPtSi の磁気秩序 (2018)
  • Author(s): 金子耕士, Matthias D. Frontzek, 松田雅昌, 中尾朗子, 宗像孝司, 大原高志, 垣花将司, 芳賀芳範, 辺土正人, 仲間隆男, 大貫惇睦
  • Organizer: 日本中性子科学会 第18回年会
• [Presentation] 異なる”眼”で見る物質像： X線と中性子の違いを活用した構造解析 (2018)
  • Author(s): 金子耕士
  • Organizer: 第二回大型実験施設とスーパーコンピュータとの連携利用勉強会 「放射光・中性子線と理論計算との融合による精密構造解析の新展開
  • Invited
• [Presentation] 中性子・放射光の相補利用でみる格子が絡む新規現象の解明 (2018)
  • Author(s): 金子耕士，川崎卓郎，仲村愛，茂吉武人，宗像孝司，中尾朗子，花島隆泰，鬼柳亮嗣，大原高志，及川健一，田村格良，辺土正人，仲間隆男，大貫惇睦
  • Organizer: JAEA-QST 放射光科学シンポジウム2018
  • Invited
• [Presentation] Eu 3価金属化合物EuPd3 におけるJ 多重項励起 (2017)
  • Author(s): 金子耕士，G. Pokharel，A. D. Christianson，竹内徹也，仲村愛，辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会第72回年次大会
  • Place of Presentation: 大阪大学（大阪府豊中市）
  • Year and Date: 2017-03-17
• [Presentation] Eu3価金属化合物EuPd3 におけるJ 多重項励起 (2017)
  • Author(s): 金子耕士，G. Pokharel，A. D. Christianson，竹内徹也，仲村愛， 辺土正人，仲間隆男，大貫惇睦
  • Organizer: 日本物理学会第72回年次大会
• [Presentation] Magnetic anisotropy in isovalent spin S=7/2 family EuTIn4 (T=Ni, Pd, Pt) (2017)
  • Author(s): K. Kaneko, S. Ikeda, M. D. Fronzek, H. Cao, T. Hanashima, A. Nakao, R. Kiyanagi, T. Ohhara, Y. Homma, H. Kobayashi, H. Yamagami
  • Organizer: International Conference on Neutron Scattering (ICNS2017)
  • Int'l Joint Research
• [Presentation] Eu2価金属化合物EuTIn4における多彩な磁気異方性 (2017)
  • Author(s): 金子耕士, 池田修悟, Matthias D. Frontzek, Huibo Cao, 花島隆泰, 中尾朗子, 鬼柳亮嗣, 大原高志, 小林寿夫, 山上浩志
  • Organizer: 日本中性子科学会 第17回年会
• [Presentation] Complementary use of neutron and x-ray scattering to explore structural quantum criticality in superconducting stannide (2016)
  • Author(s): K. Kaneko, M. Matsuda, S. Tsutsui, Y. W. Cheung, Y. Hu, S. K. Goh, T. Matsumoto, M. Imai, Y. Tanioku, H. Kanagawa, K. Yoshimura
  • Organizer: The international Symposium of Quantum Beam Science at Ibaraki University
  • Place of Presentation: 茨城大学（茨城県水戸市）
  • Year and Date: 2016-11-18
  • Int'l Joint Research