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

2012 Fiscal Year Final Research Report

• 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
• 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

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] 3-Type Lattice Instability and the Hidden Order of URu2Si2 (2013)
  • Author(s): Tatsuya Yanagisawa, Shota Mombetsu, Hiroyuki Hidaka, Hiroshi Amitsuka, Mitsuhiro Akatsu, Shadi Yasin, Sergei Zherlitsyn, Jochen Wosnitza, Kevin Huang, and M. Brian Maple
  • Journal Title: J. Phys. Soc. Jpn Volume: 82 Pages: 013601
  • DOI: 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 CeCu_2Si_2 -Similarities between Ni Substitution and High-Pressure Effects- (2012)
  • Author(s): Yoichi Ikeda, Shingo Araki, Tatsuo C. Kobayashi, Yusei Shimizu, Tatsuya Yanagisawa, and Hiroshi Amitsuka
  • Journal Title: J. Phys. Soc. Jpn Volume: 81 Pages: 083701
  • DOI: 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 ThRu_2Si_2'T (2012)
  • Author(s): Yanagisawa, H. Saito, Y. Watanabe, Y. Shimizu, H. Hidaka, and H. Amitsuka
  • Journal Title: J. Phys. Conf. Ser Volume: 391 Pages: 012079
  • DOI: DOI:10.1088/1742-6596/391/1/012079
  • 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
  • Year and Date: 20130326-29
• [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
  • Year and Date: 20120918-21
• [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
  • Year and Date: 20120829-0901
• [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
  • Year and Date: 20120613-14
• [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] 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
  • Year and Date: 20110921-24
• [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
  • Year and Date: 20110828-0903
• [Remarks]
  • URL: http://sonicbangs.sci.hokudai.ac.jp/yanagisawa/