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Quantum critical behaviors induced by a magnetic frustration in 4f hole systems under pressures

Research Project

Project/Area Number 25400375
Research Category

Grant-in-Aid for Scientific Research (C)

Allocation TypeMulti-year Fund
Section一般
Research Field Condensed matter physics II
Research InstitutionHiroshima University

Principal Investigator

Umeo Kazunori  広島大学, 自然科学研究支援開発センター, 准教授 (10223596)

Co-Investigator(Renkei-kenkyūsha) TAKABATAKE Toshiro  広島大学, 大学院先端物質科学研究科, 教授 (40171540)
Project Period (FY) 2013-04-01 – 2016-03-31
Project Status Completed (Fiscal Year 2015)
Budget Amount *help
¥4,940,000 (Direct Cost: ¥3,800,000、Indirect Cost: ¥1,140,000)
Fiscal Year 2015: ¥1,040,000 (Direct Cost: ¥800,000、Indirect Cost: ¥240,000)
Fiscal Year 2014: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2013: ¥2,210,000 (Direct Cost: ¥1,700,000、Indirect Cost: ¥510,000)
Keywords高圧力 / 量子臨界現象 / 4fホール系 / フラストレーション / 磁気フラストレーション / 4fホール系 / 非フェルミ液体的挙動 / 比熱 / 磁化
Outline of Final Research Achievements

We developed a low-temperature AC calorimeter for measuring the absolute value of specific heat under pressures up to 10 GPa.
In YbAgGe, Yb atoms form a quasi-kagome lattice in the hexagonal c-plane. With increasing x of YbAg1-xAuxGe, We found that the magnetic ordering temperature at 0.8 K increases up to 1.3 K for x = 0.11, while the Kondo temperature rises. These observations suggest that the magnetic frustration in the Yb sublattice is released by the atomic disorder in the nonmagnetic Ag-Ge sublattice. We have investigated the uniaxial and hydrostatic pressure effects on the antiferromagnetic order at TN=4.2 K of YbCuGe with a triangular lattice of Yb ions. For P//a up to 0.17 GPa, where the Yb triangular lattice is distorted, the TN increases up to 4.5 K. These contrasting responses indicate that the distortion under P//a releases the magnetic frustration and stabilizes the antiferromagnetic order in YbCuGe.

Report

(4 results)
  • 2015 Annual Research Report   Final Research Report ( PDF )
  • 2014 Research-status Report
  • 2013 Research-status Report
  • Research Products

    (21 results)

All 2016 2015 2014 Other

All Journal Article (10 results) (of which Int'l Joint Research: 2 results,  Peer Reviewed: 8 results,  Open Access: 2 results,  Acknowledgement Compliant: 2 results) Presentation (11 results) (of which Int'l Joint Research: 1 results)

  • [Journal Article] Metal-semiconductor transition concomitant with a structural transformation in tetrahedrite Cu12Sb4S132016

    • Author(s)
      H. I. Tanaka, K. Suekuni, K. Umeo, T. Nagasaki, H. Sato, G. Kutluk, E. Nishibori, H. Kasai, T. Takabatake
    • Journal Title

      Journal of Physical Society of Japan

      Volume: 85 Issue: 1 Pages: 014703-014703

    • DOI

      10.7566/jpsj.85.014703

    • NAID

      210000133804

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Ferromagnetic transition in a caged compound NdOs2Zn202015

    • Author(s)
      K. Wakiya, K. T. Matsumoto, T. Onimaru, K. Umeo, T. Takabatake
    • Journal Title

      Phys. Procedia

      Volume: 75 Pages: 511-515

    • DOI

      10.1016/j.phpro.2015.12.064

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Open Access
  • [Journal Article] 高圧力・極低温下における交流法による比熱の絶対値測定2015

    • Author(s)
      梅尾 和則
    • Journal Title

      高圧力の科学と技術

      Volume: 25 Pages: 283-291

    • NAID

      130005118630

    • Related Report
      2015 Annual Research Report
    • Acknowledgement Compliant
  • [Journal Article] 希土類化合物の圧力下における磁性-非磁性転移2015

    • Author(s)
      梅尾 和則
    • Journal Title

      月刊化学工業

      Volume: 66 Pages: 653-661

    • Related Report
      2015 Annual Research Report
  • [Journal Article] Electronic structure of YbNiX3 (X=Si,Ge) studied by hard x-ray photoemission spectroscopy2015

    • Author(s)
      H. Sato, Y. Utsumi, J. Kodama, H. Nagata, M. A. Avila, R. A. Ribeiro, K. Umeo, T. Takabatake, K. Mimura, S. Motonami, H. Anzai, S. Ueda, K. Shimada, H. Namatame, M. Taniguchi
    • Journal Title

      Physica Status Solidi C

      Volume: 12 Issue: 6 Pages: 620-623

    • DOI

      10.1002/pssc.201400312

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed / Int'l Joint Research
  • [Journal Article] Effect of La substitution in PrIr2Zn20 on the superconductivity and anitiferro-quadrupolar order2015

    • Author(s)
      K. T. Matsumoto, T. Onimaru, K. Wakiya, K. Umeo, T. Takabatake
    • Journal Title

      J. Phys. Soc. Jpn.

      Volume: 84 Issue: 6 Pages: 063703-063703

    • DOI

      10.7566/jpsj.84.063703

    • Related Report
      2015 Annual Research Report
    • Peer Reviewed
  • [Journal Article] 1.Anomalous Magnetic Phase Diagram of CeTe under High Pressure2015

    • Author(s)
      Hiroaki Takaguchi, Yuya Hayashi, Takeshi Matsumura, Kazunori Umeo, Masafumi Sera, and Akira Ochiai
    • Journal Title

      J. Phys. Soc. Jpn., 84 (2015) 044708.

      Volume: 84 Issue: 4 Pages: 044708-044708

    • DOI

      10.7566/jpsj.84.044708

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Open Access
  • [Journal Article] 1.Suppression of antiferromagnetic order and hybridization gap by electron- and hole-doping in the Kondo semiconductor CeOs2Al102014

    • Author(s)
      J. Kawabata, T. Takabatake, K. Umeo, and Y. Muro
    • Journal Title

      Physical Review B

      Volume: 89 Issue: 9

    • DOI

      10.1103/physrevb.89.094404

    • Related Report
      2014 Research-status Report
    • Peer Reviewed
  • [Journal Article] 10 GPaまでの圧力下で比熱の絶対値測定が可能な交流法熱量計の開発2014

    • Author(s)
      梅尾和則
    • Journal Title

      固体物理

      Volume: 49 Pages: 637-644

    • Related Report
      2014 Research-status Report
    • Peer Reviewed / Acknowledgement Compliant
  • [Journal Article] Pressure-induced valence change of YbNiGe3 investigated by resonant x-ray emission spectroscopy at the Yb L-3 edge2014

    • Author(s)
      Sato, H, Yamaoka, H, Utsumi, Y, Nagata, H, Avila, MA, Ribeiro, RA, Umeo, K, Takabatake, T, Zekko, Y, Mizuki, J, Lin, JF, Hiraoka, N, Ishii, H, Tsuei, KD, Namatame, H, Taniguchi, M
    • Journal Title

      PHYSICAL REVIEW B

      Volume: 89 Issue: 4 Pages: 45112-45112

    • DOI

      10.1103/physrevb.89.045112

    • Related Report
      2013 Research-status Report
    • Peer Reviewed
  • [Presentation] 近藤半導体CeOs2Al10の磁気転移とc-f混成に対する一軸圧力効果2016

    • Author(s)
      林慶介, 山田義大, 川端丈, 梅尾和則, 高畠敏郎, 室裕司
    • Organizer
      日本物理学会2016年春季大会
    • Place of Presentation
      東北学院大学 泉キャンパス
    • Year and Date
      2016-03-19
    • Related Report
      2015 Annual Research Report
  • [Presentation] 7 GPaまでの比熱測定によるI型クラスレートBa8Ga16Sn30のラットリングの体積依存性2015

    • Author(s)
      梅尾 和則,末國 晃一郎,高畠 敏郎
    • Organizer
      高圧討論会
    • Place of Presentation
      広島市アステールプラザ
    • Year and Date
      2015-11-10
    • Related Report
      2015 Annual Research Report
  • [Presentation] I型クラスレートEu8Ga16Ge30の特異な強磁性に対するキャリア密度の効果2015

    • Author(s)
      梅尾和則,曽我部聖哉,鬼丸孝博,M. A. Avila,長谷川巧,荻田典男,宇田川眞行,高畠敏郎
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学 千里山キャンパス
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] 三角格子反強磁性体YbCuGeの磁気フラストレーションに対する一軸圧効果2015

    • Author(s)
      渡部大地,梅尾和則,荒木幸治,加藤健一,高畠敏郎
    • Organizer
      日本物理学会2015年秋季大会
    • Place of Presentation
      関西大学 千里山キャンパス
    • Year and Date
      2015-09-16
    • Related Report
      2015 Annual Research Report
  • [Presentation] Improved AC-calorimeter for measuring the absolute value of specific heat up to 10 GPa2015

    • Author(s)
      Kazunori Umeo and Toshiro Takabatake
    • Organizer
      AIRAPT2015
    • Place of Presentation
      Madrid, Spain
    • Year and Date
      2015-08-30
    • Related Report
      2015 Annual Research Report
    • Int'l Joint Research
  • [Presentation] 10 GPaまでの高圧力下で比熱の絶対値測定可能な交流法熱量計の開発2015

    • Author(s)
      梅尾和則,高畠敏郎
    • Organizer
      日本物理学会第70回年次大会
    • Place of Presentation
      早稲田大学早稲田キャンパス(東京都新宿区)
    • Year and Date
      2015-03-22
    • Related Report
      2014 Research-status Report
  • [Presentation] 10 GPaまでの比熱の絶対値測定が可能な交流法熱量計の開発2014

    • Author(s)
      梅尾和則,高畠敏郎
    • Organizer
      高圧討論会
    • Place of Presentation
      徳島大学常三島キャンパス(徳島市)
    • Year and Date
      2014-11-22
    • Related Report
      2014 Research-status Report
  • [Presentation] PrIr2Zn20の超伝導転移と四極子転移の圧力効果2014

    • Author(s)
      梅尾 和則,菅野 雄介,松本 圭介,鬼丸 孝博,高畠 敏郎,松林 和幸,上床 美也
    • Organizer
      日本物理学会2014年秋季大会
    • Place of Presentation
      中部大学春日井キャンパス(愛知県春日井市)
    • Year and Date
      2014-09-09
    • Related Report
      2014 Research-status Report
  • [Presentation] Pressure induced heavy-fermion state in a caged superconductor PrIr2Zn202014

    • Author(s)
      Kazunori UMEO, Yusuke SUGANO, Keisuke T. MATSUMOTO, Takahiro ONIMARU, Kazuyuki MATSUBAYASHI, Yoshiya UWATOKO and Toshiro TAKABATAKE
    • Organizer
      SCES2014
    • Place of Presentation
      グルノーブル(フランス)
    • Year and Date
      2014-07-07
    • Related Report
      2014 Research-status Report
  • [Presentation] 10 GPaまでの電気抵抗測定によるYbNiGe3の圧力誘起磁気秩序の探索

    • Author(s)
      梅尾和則,M. A. Avila,高畠敏郎
    • Organizer
      第54回高圧討論会
    • Place of Presentation
      朱鷺メッセ 新潟コンベンションセンター
    • Related Report
      2013 Research-status Report
  • [Presentation] Release of the Magnetic Frustration by Au Substitution in a Quasi-Kagome Antiferromagnet YbAgGe

    • Author(s)
      K. Umeo, H. Kubo, T. Onimaru, K. Katoh, and T. Takabatake
    • Organizer
      The International Conference on Strongly Correlated Electron Systems 2013
    • Place of Presentation
      東京大学 伊藤国際学術研究センター
    • Related Report
      2013 Research-status Report

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Published: 2014-07-25   Modified: 2020-05-15  

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