Microscopic Study for Magnetic Order and Superconductivity Near Neighbor to QCP in Non-centrosymmetric Heavy Fermion Compound

• Project/Area Number: 21540366
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Condensed matter physics II
• Research Institution: Kochi University
• Principal Investigator: MATSUMURA Masahiro 高知大学, 教育研究部・自然科学系, 教授 (20127400)
• Co-Investigator(Kenkyū-buntansha): NISHIOKA Takashi 高知大学, 教育研究部・自然科学系, 教授 (10218117) ; KATO Harukazu 高知大学, 教育研究部・自然科学系, 准教授 (60363272) ; KOHORI Yoh 千葉大学, 理学研究科, 教授 (10153660)
• Research Collaborator: MIZOO Masakazu 高知大学, 総合人間自然科学研究科・理学専攻, 修士課程学生 ; INAGAKI Takayuki 高知大学, 総合人間自然科学研究科・理学専攻, 修士課程学生 ; KAWAMURA Yukihiro 高知大学, 総合人間自然科学研究科・応用自然科学専攻, 博士課程学生
• Project Period (FY): 2009 – 2011
• Project Status: Completed (Fiscal Year 2011)
• Budget Amount: ¥4,810,000 (Direct Cost: ¥3,700,000、Indirect Cost: ¥1,110,000); Fiscal Year 2011: ¥520,000 (Direct Cost: ¥400,000、Indirect Cost: ¥120,000); Fiscal Year 2010: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2009: ¥3,640,000 (Direct Cost: ¥2,800,000、Indirect Cost: ¥840,000)
• Keywords: 重い電子系 / 空間反転対称性欠損 / 量子臨界点 / 磁気秩序 / 超伝導 / 核磁気共鳴 / 圧力効果 / 核四重極共鳴 / NQR

Research Abstract

In order to clarify the change of complex magnetic order toward the quantum critical point(QCP) and, as our final goal, the specific properties of the superconductivity near-neighbor to QCP in noncentrosymmetric CeCoGe_3, Co-NQR/ NMR measurements under pressure have been performed. The emergence of the complex magnetic order, successive magnetic transition accompanied by the step-like decrease of the magnetization, is confined to the low pressure below about 0. 7GPa. The magnetic structure in higher pressure becomes a variation of the type uudd ever proposed by the neutron scattering experiments in ambient pressure. The magnetic order-pressure phase diagram toward QCP is deduced.

Research Products

• [Journal Article] Co-NQR Study on Successive Magnetic Phase under Pressure in Non-centrosymmetric CeCoGe_3 (2012)
  • Author(s): T. Inagaki, M. Matsumura, M. Mizoo, Y. Kawamura, H. Kato and T. Nishioka
  • Journal Title: J. Phys. Conf. Series Volume: (印刷中)
• [Journal Article] Co-NQR Study on Successive Magnetic Phase under Pressure in Non-centrosymmetric CeCoGe_3 (2012)
  • Author(s): T.Inagaki, et.al.
  • Journal Title: J.Phys.Conf.Series Volume: (掲載確定)(未定)
  • Peer Reviewed
• [Journal Article] Electronic structure and localized lanthanide character of LnT_2Al_<10>(T=Ru, Os) (2011)
  • Author(s): H. Tanida1, D. Tanaka1, M. Sera, S. Tanimoto, T. Nishioka, M. Matsumura, M. Ogawa, C. Moriyoshi, Y. Kuroiwa, J. E. Kim, N. Tsuji, and M. Takata
  • Journal Title: Phys. Rev. B Volume: 84
• [Journal Article] Reconciliation between NQR Spectrum and Long-Range Magnetic Order in CeRu_2Al_<10> (2011)
  • Author(s): M. Matsumura, H. Tanida, D. Tanaka, H. Kato, T. Nishioka, and M. Sera
  • Journal Title: J. Phys. Soc. Jpn Volume: 80
• [Journal Article] Magnetic Structure Determination of CeT_2Al_<10>(T=Ru and Os): Single Crystal Neutron Diffraction Studies (2011)
  • Author(s): H. Kato, R. Kobayashi, T. Takesaka, T. Nishioka, M. Matsumura, K. Kaneko, and N. Metoki.
  • Journal Title: J. Phys. Soc. Jpn Volume: 80
• [Journal Article] ^<27> Al NMR Study on CeRu_2A_<l10> Single Crystal : I. Determination of the NQR parameters for Five Non-Equivalent Al Sites in the Paramagnetic Region (2011)
  • Author(s): H. Tanida, D. Tanaka, M. Sera, T. Nishioka, H. Kato, M. Matsumura, H. Harima, and H. Yasuoka
  • Journal Title: J. Phys. Soc. Jpn Volume: 80
• [Journal Article] Successive magnetic transition in non-centrosymmetric CeCoGe_3 probed by Co-NQR (2011)
  • Author(s): M. Matsumura, Y. Sato, M. Mizoo, Y. Kawamura, H. Kato, and T. Nishioka
  • Journal Title: J. Phys.: Conf. Series Volume: 273
• [Journal Article] Low pressure phase diagram of CeCoGe_3 (2011)
  • Author(s): M. Mizoo, T. Nishioka, H. Kato, and M. Matsumura.
  • Journal Title: J. Phys.: Conf. Series Volume: 273
• [Journal Article] Magnetic Structure Determination of CeT_2Al_<10> (T=Ru and Os) : Single Crystal Neutron Diffraction Studies (2011)
  • Author(s): H.Kato, et.al.
  • Journal Title: J.Phys.Soc.Jpn. Volume: 80
  • DOI: 10.1143/jpsj.80.073701
  • Peer Reviewed
• [Journal Article] Reconciliation between NQR Spectrum and Long-Range Magnetic Order in CeRu_2Al_<10> (2011)
  • Author(s): M.Matsumura, et.al.
  • Journal Title: J.Phys.Soc.Jpn. Volume: 80
  • DOI: 10.1143/jpsj.80.085001
  • Peer Reviewed
• [Journal Article] Electronic structure and localized lanthanide character of LnT_2Al_<10> (T=Ru, Os) (2011)
  • Author(s): H.Tanida, et.al.
  • Journal Title: Phys.Rev.B Volume: 84
  • DOI: 10.1103/physrevb.84.115128
  • Peer Reviewed
• [Journal Article] Low pressure phase diagram of CeCoGe_3 (2011)
  • Author(s): M.Mizoo, et.al.
  • Journal Title: J.Phys.: Conference Series Volume: 273
  • Peer Reviewed
• [Journal Article] Successive magnetic transition in non-centrosymmetric CeCoGe_3 probed by Co-NQR (2011)
  • Author(s): M.Matsumura, et.al.
  • Journal Title: J.Phys.: Conference Series Volume: 273
  • Peer Reviewed
• [Journal Article] ^<27>Al NMR Study on CeRu_2Al_<10> Single Crystal : I.Determination of the NQR parameters for Five Non-Equivalent Al Sites in the Paramagnetic Region (2011)
  • Author(s): H.Tanida, et.al.
  • Journal Title: J.Phys.Soc.Jpn. Volume: 80
  • Peer Reviewed
• [Journal Article] ^<27> Al-NQR/ NMR Study of Kondo Semiconductor CeFe_2Al_<10> (2010)
  • Author(s): Y. Kawamura, S. Edamoto, T. Takesaka, T. Nishioka, H. Kato, M. Matsumura, Y. Tokunaga, S. Kambe, and H. Yasuoka.
  • Journal Title: J. Phys. Soc. Jpn Volume: 79
• [Journal Article] High pressure electrical resistivity of CeCuAl_3 (2010)
  • Author(s): Y. Kawamura, T. Nishioka, H. Kato, M. Matsumura, K. Matsubayashi, and Y. Uwatoko.
  • Journal Title: J. Phys. Conf. Sries Volume: 200
• [Journal Article] ^<27>Al-NQR/NMR Study of Kondo Semiconductor CeFe_2Al_<10> (2010)
  • Author(s): Y.Kawamura, et.al.
  • Journal Title: J.Phys.Soc.Jpn. Volume: 79
  • Peer Reviewed
• [Journal Article] High pressure electrical resistivity of CeCuAl_3 (2010)
  • Author(s): Yukihiro Kawamura
  • Journal Title: J.Phys.Conference Sries 200
  • Peer Reviewed
• [Journal Article] Novel Phase Transition in CeRu_2Al_<10> Probed by^<27> Al-NQR/ NMR. No Evidence of Magnetic Ordering- (2009)
  • Author(s): M. Matsumura, Y. Kawamura, S. Edamoto, T. Takesaka, H. Kato, T. Nishioka, Y. Tokunaga, S. Kambe, and H. Yasuoka
  • Journal Title: J. Phys. Soc. Jpn Volume: 78
• [Journal Article] ^<27> Al-NQR study in BaNiSn_3-type CeCuAl_3 (2009)
  • Author(s): M. Matsumura, Y. Kawamura, M. Yoshina, T. Nishioka, and H. Kato.
  • Journal Title: J. Phys. Conf. Sries Volume: 150
• [Journal Article] ^<27>Al-NQR study in BaNiSn_3-type CeCuAl_3 (2009)
  • Author(s): M.Matsumura
  • Journal Title: J.Phys.Conference Sries 150
  • Peer Reviewed
• [Journal Article] Novel Phase Transition in CeRu_2Al_<10> Probed by ^<27>Al-NQR/NMR-No Evidence of Magnetic Ordering (2009)
  • Author(s): M.Matsumura
  • Journal Title: J.Phys.Soc.Jpn 78
  • Peer Reviewed
• [Presentation] Co-NQRによる反転対称性欠損CeCoGe_3の磁気秩序の圧力効果 (2012)
  • Author(s): 稲垣貴之
  • Organizer: 日本物理学
  • Place of Presentation: 関西学院大学上ヶ原キャンパス
  • Year and Date: 2012-03-24
• [Presentation] Co-NQRによる反転対称性欠損CeCoGe_3の磁気秩序の圧力効果 (2012)
  • Author(s): 稲垣貴之, 他
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学上ヶ原キャンパス(兵庫県)
  • Year and Date: 2012-03-24
• [Presentation] CeCoGe_3の圧力温度相図III (2011)
  • Author(s): 溝尾将一
  • Organizer: 本物理学会
• [Presentation] 反転対称性欠損型CeCoGe_3の圧力下Co-NQR (2011)
  • Author(s): 稲垣貴之
  • Organizer: 日本物理学会
• [Presentation] Co-NQR Study on Successive Magnetic Phase under Pressure in Non-centrosymmetric CeCoGe_3 (2011)
  • Author(s): T. Inagaki
  • Organizer: 26th International Conference on Low Temperature Physics(LT26)
  • Year and Date: 2011-08-13
• [Presentation] Co-NQR Study on Successive Magnetic Phase under Pressure in Non-centrosymmetric CeCoGe_3 (2011)
  • Author(s): T.Inagaki, et.al.
  • Organizer: 26th International Conference on Low temperature Physics (LT26)
  • Place of Presentation: Conference Hall in Beijing
  • Year and Date: 2011-08-13
• [Presentation] 反転対称性欠損型CeCoGe_3の圧力下Co-NQR (2011)
  • Author(s): 稲垣貴之, 他
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 概要集の発行及び公開サイトへの資料掲載により発表成立
  • Year and Date: 2011-03-03
• [Presentation] CeCoGe3の圧力温度相図III (2011)
  • Author(s): 溝尾将一, 他
  • Organizer: 日本物理学会第66回年次大会
  • Place of Presentation: 概要集の発行及び公開サイトへの資料掲載により発表成立
  • Year and Date: 2011-03-03
• [Presentation] CeCoGe_3の圧力温度相図II (2010)
  • Author(s): 溝尾将一
  • Organizer: 日本物理学会
  • Place of Presentation: 中百舌鳥キャンパス(大阪府立大学)
  • Year and Date: 2010-09-23
• [Presentation] CeCoGe_3の圧力温度相図II (2010)
  • Author(s): 溝尾将一, 他
  • Organizer: 日本物理学会2010年秋季大会
  • Place of Presentation: 中百舌鳥キャンパス(大阪府立大学)
  • Year and Date: 2010-09-23
• [Presentation] Pressure effect of complex phase transition in CeCoGe_3 (2010)
  • Author(s): M. Mizoo
  • Organizer: International Conference on Heavy Electrons,(ICHE2010)
  • Place of Presentation: 首都大学東京
  • Year and Date: 2010-09-19
• [Presentation] Pressure effect of complex phase transition in CeCoGe_3 (2010)
  • Author(s): M.Mizoo, et al.
  • Organizer: International Conference on Heavy Electrons (ICHE2010)
  • Place of Presentation: 首都大学東京
  • Year and Date: 2010-09-19
• [Presentation] 反転対称性欠損型重い電子系CeCoGe_3の^<59> Co-NQR (2010)
  • Author(s): 稲垣貴之
  • Organizer: 日本物理学会中国支部・四国支部学術講演会
  • Place of Presentation: 高知大学
  • Year and Date: 2010-07-31
• [Presentation] CeCoGe_3の低圧相図 (2010)
  • Author(s): 溝尾将一
  • Organizer: 日本物理学会中国支部・四国支部学術講演会
  • Place of Presentation: 高知大学
  • Year and Date: 2010-07-31
• [Presentation] CeCoGe3の低圧相図 (2010)
  • Author(s): 溝尾将一, 他
  • Organizer: 日本物理学会中国支部・四国支部学術講演会
  • Place of Presentation: 共通教育棟(高知大学)
  • Year and Date: 2010-07-31
• [Presentation] 反転対称性欠損型重い電子系CeCoGe_3の^<59>Co-NQR (2010)
  • Author(s): 稲垣貴之, 他
  • Organizer: 日本物理学会中国支部・四国支部学術講演会
  • Place of Presentation: 共通教育棟(高知大学)
  • Year and Date: 2010-07-31
• [Presentation] Successive Magnetic Transition in Non-centrosymmetric CeCoGe3 Probed by Co-NQR (2010)
  • Author(s): 松村政博
  • Organizer: Strongly Correlated Electron System(SCES)
  • Place of Presentation: Santa Fe(米国)
  • Year and Date: 2010-06-28
• [Presentation] Successive Magnetic Transition in Non-centrosymmetric CeCoGe_3 Probed by Co-NQR (2010)
  • Author(s): 松村政博
  • Organizer: Strongly Correlated Electron System(SCES)
  • Place of Presentation: Sannta Fe(米国)
  • Year and Date: 2010-06-28
• [Presentation] 反転対称性欠損BaNiSn_3型CeCoGe_3の^<59> Co-NQR (2010)
  • Author(s): 松村政博
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-21
• [Presentation] CeCoGe_3の圧力温度相図 (2010)
  • Author(s): 溝尾将一
  • Organizer: 日本物理学会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-21
• [Presentation] 反転対称性欠損BaNiSn_3型CeCoGe_3の^<59>Co-NQR (2010)
  • Author(s): 松村政博
  • Organizer: 日本物理学会第65回年次大会
  • Place of Presentation: 岡山大学津島キャンパス
  • Year and Date: 2010-03-21
• [Presentation] ホール磁化測定法によるCeCoGe_3の圧力下の磁性 (2009)
  • Author(s): 溝尾将一
  • Organizer: 日本物理学会
  • Place of Presentation: 熊本大学黒髪キャンパス
  • Year and Date: 2009-09-25