Studies of the chiral order on the weak coupling systems

• Project/Area Number: 19540402
• Research Category: Grant-in-Aid for Scientific Research (C)
• Allocation Type: Single-year Grants
• Section: 一般
• Research Field: Mathematical physics/Fundamental condensed matter physics
• Research Institution: Osaka University
• Principal Investigator: TANIGUCHI Toshifumi Osaka University, 大学院・理学研究科, 准教授 (80207183)
• Project Period (FY): 2007 – 2009
• Project Status: Completed (Fiscal Year 2009)
• Budget Amount: ¥5,070,000 (Direct Cost: ¥3,900,000、Indirect Cost: ¥1,170,000); Fiscal Year 2009: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2008: ¥650,000 (Direct Cost: ¥500,000、Indirect Cost: ¥150,000); Fiscal Year 2007: ¥3,770,000 (Direct Cost: ¥2,900,000、Indirect Cost: ¥870,000)
• Keywords: 統計物理学 / 磁性 / フラストレート系 / ランダム系 / カイラリティ / 異常ホール効果 / 臨界現象 / スピングラス / 相転移 / ユニバーサリティ / D-M異方性 / パイロクロア酸化物

Research Abstract

The phase transition whose order parameter can be considered as 'chirality' has been investigated by using anomalous Hall effect on canonical spin glass systems. The Dzyalosinsky-Moriya anisotropy was controlled by changing the atomic radius of the host metall. The results strongly suggests that the existence of the phase transition characterized by chirality.

Research Products

• [Journal Article] フラストレーションが生みだす右・左の世界 (2010)
  • Author(s): 川村光、谷口年史
  • Journal Title: パリティ 25 Pages: 64-68
• [Journal Article] フラストレーションが生みだす右・左の世界 (2010)
  • Author(s): 川村光, 谷口年史
  • Journal Title: パリティ 25 Pages: 64-68
• [Journal Article] Spin Glass Behavior in Metallic Pyrochlore Ruthenate Ca2Ru2O7 (2009)
  • Author(s): T. Taniguchi, H. Sato
  • Journal Title: J. Phys. : Conference Series 145 Pages: 120171-120174
  • Peer Reviewed
• [Journal Article] Spin Glass Behavior in Metallic Pyrochlore Ruthenate Ca_2Ru_2O_7 (2009)
  • Author(s): T. Taniguchi
  • Journal Title: Journal of Physics : Conference Series 145 Pages: 120171-120174
  • Peer Reviewed
• [Journal Article] Anisotropy dependence of anomalous Hall effect in canonical spin glass alloys (2007)
  • Author(s): K. Yamanaka, T. Taniguchi
  • Journal Title: J. Phys. : Condens. Mater. 19 Pages: 1452221-1452225
  • Peer Reviewed
• [Journal Article] Chiral susceptibility of canonical spin glasses from Hall effect measurements (2007)
  • Author(s): T. Taniguchi
  • Journal Title: (invited) J. Phys. : Condens. Mater 19 Pages: 1452131-1452138
  • Peer Reviewed
• [Journal Article] Anisotropy dependence of anomalous Hall effect in canonical spin glass alloys (2007)
  • Author(s): K. Yamanaka
  • Journal Title: J. Phys.: Condens. Mater. 19 Pages: 1452221-1452225
  • Peer Reviewed
• [Journal Article] Chiral susceptibility of canonical spin glasses from Hall effect measurements (invited) (2007)
  • Author(s): T. Taniguchi
  • Journal Title: J. Phys.: Condens. Mater. 19 Pages: 1452131-1452138
  • Peer Reviewed
• [Presentation] LuBaCo4O7の磁気相図 (2009)
  • Author(s): 谷口年史、左右田稔
  • Organizer: 日本物理学会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] LuBaCo_4O_7の磁気相図 (2009)
  • Author(s): 谷口年史
  • Organizer: 日本物理学会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] 新親デルタ鎖化合物Cu_2(AsO_4)(OH)_3・3H_2Oの磁性 (2009)
  • Author(s): 菊池彦光
  • Organizer: 日本物理学会
  • Place of Presentation: 熊本大学
  • Year and Date: 2009-09-25
• [Presentation] パイロクロア酸化物Ca_2Ru_2O_7の非線形帯磁率II (2009)
  • Author(s): 谷口年史
  • Organizer: 日本物理学会
  • Place of Presentation: 立教大学
  • Year and Date: 2009-03-29
• [Presentation] パイロクロア酸化物Ca_2Ru_2O_7の非線形帯磁率 (2008)
  • Author(s): 谷口年史
  • Organizer: 日本物理学会
  • Place of Presentation: 岩手大学
  • Year and Date: 2008-09-21
• [Presentation] Spin Glass Behavior in Metallic Pyrochlore Ruthenate Ca2Ru2O7 (2008)
  • Author(s): T. Taniguchi H. Sato
  • Organizer: Highly Frustrated Magnetism
  • Place of Presentation: Braunschweig大(ドイツ)
  • Year and Date: 2008-09-08
• [Presentation] Spin Glass Behavior in Metallic Pyrochlore Ruthenate Ca_2Ru_2O_7 (2008)
  • Author(s): T. Taniguchi
  • Organizer: Highly Frustrated Magnetism 2008
  • Place of Presentation: Braunschweig大(ドイツ)
  • Year and Date: 2008-09-08
• [Presentation] 異常ホール効果とnontrivialな磁気構造「カノニカルスピングラスのカイラリティ起源異常ホール効果」 (2008)
  • Author(s): 谷口年史シンポジウム
  • Organizer: 日本物理学会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] シンポジウム「異常ホール効果とnontrivialな磁気構造」カノニカルスピングラスのカイラリティ起源異常ホール効果 (2008)
  • Author(s): 谷口年史
  • Organizer: 日本物理学会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-24
• [Presentation] 重い電子系Ce(Ru_<1-x>Rh_x)_2(Si_<1-y>Ge_y)_2における2つの異なる反強磁性の競合 (2008)
  • Author(s): 田口裕健
  • Organizer: 日本物理学会
  • Place of Presentation: 近畿大学
  • Year and Date: 2008-03-23
• [Presentation] カノニカルスピングラスのカイラリティ起源異常ホール効果の異方性依存性II (2007)
  • Author(s): 芦高尚子
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-22
• [Presentation] カイラリティ起源異常ホール効果の評価II (2007)
  • Author(s): 森本穣
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-22
• [Presentation] 重い電子系Ce(Ru_<1-x>Rh_x)_2(Si_<1-y>Ge_y)_2における量子二重臨界点の探索II (2007)
  • Author(s): 大矢紫保
  • Organizer: 日本物理学会
  • Place of Presentation: 北海道大学
  • Year and Date: 2007-09-21