Research of novel quantum criticality and frustration effect on lanthanide compounds

• Project/Area Number: 24840003
• Research Category: Grant-in-Aid for Research Activity Start-up
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: Tohoku University
• Principal Investigator: NORIYUKI Kabeya 東北大学, 理学(系)研究科(研究院), 助教 (70633642)
• Project Period (FY): 2012-08-31 – 2014-03-31
• Project Status: Completed (Fiscal Year 2013)
• Budget Amount: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000); Fiscal Year 2013: ¥1,170,000 (Direct Cost: ¥900,000、Indirect Cost: ¥270,000); Fiscal Year 2012: ¥1,560,000 (Direct Cost: ¥1,200,000、Indirect Cost: ¥360,000)
• Keywords: 量子臨界現象 / フラストレーション / 強相関電子系 / 希土類化合物 / 圧力下物性測定 / 元素置換系

Research Abstract

This Research is about quantum critical point (QCP), which is the critical point caused by quantum fluctuation. We have used pressure and substitution of element as the method of approach to the QCPs. To obtain the information of quantum critical frustration, we have developed a handmade heat capacity measurement system. On the approach to the QCPs by pressure, an anomaly of electrical resistivity associated antiferromagnetic transition is found. On the approach to the QCPs by substitution of the element, we have succeed to make the single crystalline samples located at the vicinity of the QCP. the sample shows the logarithmic increase of the specific heat at low temperature region.

Research Products

• [Presentation] (2014)
  • Author(s): 佐藤直樹, 壁谷典幸, 中村慎太郎, 加藤健一, 野島勉, 落合明
  • Organizer: 日本物理学会第69回年次大会
  • Place of Presentation: 神奈川
  • Year and Date: 2014-03-30
• [Presentation] 単結晶Ce2Pt2Pbにおける磁気秩序 (2014)
  • Author(s): 壁谷典幸
  • Organizer: 日本物理学会 第69回年次大会
  • Place of Presentation: 東海大学
• [Presentation] (2013)
  • Author(s): 壁谷典幸, 佐藤竜真, 木村憲彰, 落合明
  • Organizer: 日本物理学会2013年秋季大会
  • Place of Presentation: 徳島
  • Year and Date: 2013-09-25
• [Presentation] (2013)
  • Author(s): N Kabeya, R Sato, F Kikuchi, N Kimura, E Matsuoka, K Katoh, and A Ochiai
  • Organizer: SCES2013
  • Place of Presentation: 東京
  • Year and Date: 2013-08-06
• [Presentation] (2013)
  • Author(s): 壁谷典幸, 佐藤竜真, 菊池文武, 木村憲彰, 青木晴善, 落合明
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島
  • Year and Date: 2013-03-27
• [Presentation] 3He冷凍機を用いた磁場中比熱測定装置の開発とYb2(Pd1-xNix)2Snの比熱測定 (2013)
  • Author(s): 壁谷典幸
  • Organizer: 日本物理学会 2013年秋季大会
  • Place of Presentation: 徳島大学
• [Presentation] Approach to quantum critical point on pure and Ni-doped Yb2Pd2Sn (2013)
  • Author(s): N. Kabeya
  • Organizer: SCES2013
  • Place of Presentation: The University of Tokyo
• [Presentation] Yb2Pd2Snの圧力下における磁気及び輸送特性 (2013)
  • Author(s): 壁谷典幸
  • Organizer: 日本物理学会第68回年次大会
  • Place of Presentation: 広島大学