Hydrostatic Pressure Effect of Quadrupole Response in the 5f-electon systems

• Project/Area Number: 23740250
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Multi-year Fund
• Research Field: Condensed matter physics II
• Research Institution: Hokkaido University
• Principal Investigator: YANAGISAWA Tatsuya 北海道大学, 大学院・理学研究院, 准教授 (10456353)
• Project Period (FY): 2011 – 2012
• Project Status: Completed (Fiscal Year 2012)
• Budget Amount: ¥4,680,000 (Direct Cost: ¥3,600,000、Indirect Cost: ¥1,080,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000); Fiscal Year 2011: ¥3,120,000 (Direct Cost: ¥2,400,000、Indirect Cost: ¥720,000)
• Keywords: 重い電子系 / 隠れた秩序 / 超音波測定 / 弾性定数 / 四極子感受率 / アクチノイド / 国際研究者交流：ドイツ / 国際研究者交流：米国 / 静水圧効果

Research Abstract

We have performed ultrasonic measurements of elastic constant (C11-C12)/2 on URu2Si2 by using long-pulsed magnetic field up to 68.7 T at Dresden High Magnetic-field Laboratory in order to investigate the multipole ordering models which has recently been proposed to explain the unknown 'hidden order' parameter of this compound. The present results show that the c-f hybridized heavy-electron state of this compound accompanies 3-lattice instability, and also suggest that the both hybridization and the lattice instability disappears at high magnetic field region.

Research Products

• [Journal Article] Γ3-Type Lattice Instability and the Hidden Order of URu2Si2 by Precise dc Magnetization Measurements (2013)
  • Author(s): T. Yanagisawa
  • Journal Title: Journal of the Physical Society of Japan Volume: 82 Issue: 1 Pages: 13601-13601
  • DOI: 10.7566/jpsj.82.013601
  • URL: http://eprints.lib.hokudai.ac.jp/dspace/handle/2115/51134
  • Peer Reviewed
• [Journal Article] A Study of Ni-Substitution Effects on Heavy-Fermion CeCu2Si2 - Similarities between Ni-Substitution and High Pressure Effects - (2012)
  • Author(s): Yoichi Ikeda
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Issue: 8 Pages: 83701-83701
  • DOI: 10.1143/jpsj.81.083701
  • Peer Reviewed
• [Journal Article] A Study of Elastic Properties of URu2Si2 in Comparison with the Non-5f Contribution of ThRu2Si2 (2012)
  • Author(s): T. Yanagisawa
  • Journal Title: Journal of Physics: Conference Series Volume: 391 Pages: 12079-12079
  • DOI: 10.1088/1742-6596/391/1/012079
  • Peer Reviewed
• [Journal Article] A Study of Elastic Properties of URu2Si2 in Comparison with the Non-5f Contribution of ThRu2Si2 (2012)
  • Author(s): T. Yanagisawa et al.
  • Journal Title: J. Phys. Conf. Ser. 「掲載決定」 Volume: 該当無し
  • Peer Reviewed
• [Presentation] URu_2Si_2の強磁場弾性応答 (2013)
  • Author(s): 柳澤達也,門別翔太,日高宏之,網塚浩,赤津光洋,S. Yasin,S. Zherlitsyn,J. Wosnitza,K. Huang,M. B. Maple
  • Organizer: 日本物理学会第68回年次大会2013
  • Place of Presentation: 広島大学東広島キャンパス
• [Presentation] URu_2Si_2の強磁場弾性応答 (2012)
  • Author(s): 柳澤達也
  • Organizer: URu_2Si_2の隠れた秩序及び関連する現象に関する研究会2012
  • Place of Presentation: 北海道大学理学部5号館5-302
  • Year and Date: 2012-11-12
• [Presentation] パルス強磁場を用いたURu_2Si_2の超音波測定 (2012)
  • Author(s): 柳澤達也,門別翔太,日高宏之,網塚浩,赤津光洋,S. Yasin,S. Zherlitsyn,J. Wosnitza,K. Huang,M. B. Maple
  • Organizer: 日本物理学会2012年秋季大会2012
  • Place of Presentation: 横浜国立大学常盤台キャンパス
• [Presentation] URu2Si2のパルス磁場下における超音波実験 (2012)
  • Author(s): 柳澤達也
  • Organizer: 新学術領域「超低速ミュオン顕微鏡が拓く物質・生命・素粒子科学のフロンティア」第2回領域会議2012
  • Place of Presentation: 北海道大学理学部大講堂
• [Presentation] URu_2Si_2の超音波物性測定の現状 (2012)
  • Author(s): 柳澤達也
  • Organizer: 強相関ウラン系および関連物質の磁性と超伝導に関する研究会2012
  • Place of Presentation: 北海道大学理学部5号館5-202
• [Presentation] URu_2Si_2のRh置換系における弾性応答 (2011)
  • Author(s): 渡邊雄人,齋藤旬,日浦健太,清水悠晴,柳澤達也,日高宏之,横山淳,網塚浩
  • Organizer: 日本物理学会2011年大秋季大会2011
  • Place of Presentation: 富山大学五福キャンパス
• [Presentation] A Study of Elastic Properties of URu_2Si_2 in Comparison with the Non-5f Contribution of ThRu2Si2'T (2011)
  • Author(s): Yanagisawa, H. Saito, Y. Watanabe, Y. Shimizu, H. Hidaka, and H. Amitsuka
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2011)2011
  • Place of Presentation: Cambrige University, UKPoster Session
• [Presentation] A Study of Elastic Properties of URu2Si2 in Comparison with the Non-5f Contribution of ThRu2Si2 (2011)
  • Author(s): 柳澤達也
  • Organizer: International Conference on Strongly Correlated Electron Systems (SCES2011)
  • Place of Presentation: Cambridge University (UK)
• [Presentation] URu2Si2のRh置換系における弾性応答 (2011)
  • Author(s): 渡邊雄人
  • Organizer: 日本物理学会2011年大秋季大会
  • Place of Presentation: 富山大学（富山市）
• [Presentation] URu2Si2の強磁場弾性応答
  • Author(s): 柳澤達也
  • Organizer: 日本物理学会 第68回年次大会
  • Place of Presentation: 広島大学（東広島市）
  • Invited
• [Presentation] パルス強磁場を用いたURu2Si2の超音波測定
  • Author(s): 柳澤達也
  • Organizer: 日本物理学会2012年秋季大会
  • Place of Presentation: 横浜国立大学（横浜市）
  • Invited
• [Presentation] URu2Si2のパルス強磁場下における超音波実験
  • Author(s): 柳澤達也
  • Organizer: 新学術領域研究「超低速ミュオン顕微鏡が拓く物質・生命・素粒子科学のフロンティア」第2回領域会議
  • Place of Presentation: 北海道大学（札幌市）
  • Invited
• [Book] 物性研究 第97巻 第4号 (2012)
  • Author(s): 柳澤達也
  • Publisher: 物性研究刊行会
• [Remarks]
  • URL: http://sonicbangs.sci.hokudai.ac.jp/yanagisawa/
• [Remarks] 研究代表者（柳澤達也）の研究室ホームページ
  • URL: http://sonicbangs.sci.hokudai.ac.jp/yanagisawa/publications
• [Remarks]
  • URL: http://www.cris.hokudai.ac.jp/yanagisawa/publications