Pressure and magnetic field induced quantum criticality in Yb-based heavy fermion compounds

2011 Fiscal Year Final Research Report

• Project/Area Number: 22740217
• Research Category: Grant-in-Aid for Young Scientists (B)
• Allocation Type: Single-year Grants
• Research Field: Condensed matter physics II
• Research Institution: The University of Tokyo
• Principal Investigator: MATSUBAYASHI Kazuyuki 東京大学, 物性研究所, 助教 (10451890)
• Project Period (FY): 2010 – 2011
• Keywords: 重い電子系 / 量子臨界現象 / 圧力 / 磁場 / 低温 / 磁性

Research Abstract

In recent years, one of the most interesting topics is the ground state properties of heavy fermion metals located at or close to a quantum critical point(QCP). To obtain the new insights on the quantum critical behavior in Yb-based heavy fermion systems under pressure and magnetic field, we have developed new type of high pressure cell. Combined pressure-and magnetic-field-tuned specific heat measurements reveal a novel phase diagram in YbCo_2Zn_<20>. We also found the pressure-induced ferromagnetic order in YbNi_3Ga_9.

Research Products

• [Journal Article] Heat Capacity Measurement of Heavy Fermion YbCo_2Zn_<20> under Magnetic Field (2012)
  • Author(s): R. Yamanaka, K. Matsubayashi, Y. Saiga, T. Kawae, Y. Uwatoko
  • Journal Title: J. Phys.: Conf. Ser.
  • Peer Reviewed
• [Journal Article] Pressure-induced Suppression of the Ant iferromagnetic Transition in YbNisAlg Single Crystal (2012)
  • Author(s): T. Hirayama, K. Matsubayashi, T. Yamashita, S. Ohara, K. Munakata, Y. Uwatoko
  • Journal Title: J. Phys.: Conf. Ser.
  • Peer Reviewed
• [Journal Article] Mechanism of Field Induced Fermi Liquid State in Yb-Based Heavy-Fermion Compound : X-ray Absorption Spectroscopy and Nuclear Magnetic Resonance Studies of YbCo_2Zn_<20> (2012)
  • Author(s): T. Mite, T. Koyama, K. Nakagawara, T. Ishida, K. Ueda, T. Kohara, K. Matsubayashi, Y. Saiga, K. Munakata, Y. Uwatoko, M. Mizumaki, N. Kawamura, B. Idzikowski, and M. Reiffers
  • Journal Title: J. Phys. Soc. Jpn. Volume: 81 Pages: 033706
  • Peer Reviewed
• [Journal Article] Pressure-induced changes in the magnetic and valence state of EuFe_2As_2 (2011)
  • Author(s): K. Matsubayashi, K. Munakata, M. Isobe, N. Katayama, K. Ohgushi, Y. Ueda, N. Kawamura, M. Mizumaki, N. Ishimatsu, M. Heda, I. Umehara, and Y. Uwatoko
  • Journal Title: Phys. Rev. B Volume: 106 Pages: 024502
  • Peer Reviewed
• [Journal Article] Pressure-induced variation of Kondo behavior on the heavy fermion compounds YbT_2Zn_<20>(T=Co, Rh, Ir) (2010)
  • Author(s): K. Matsubayashi, Y. Saiga, T. Matsumoto, Y. Uwatoko
  • Journal Title: J. Phys.: Conf. Ser. Volume: 200 Pages: 012112
  • Peer Reviewed
• [Journal Article] High-Pressure Ac Specific Heat Technique with Cubic Anvil Apparatus (2010)
  • Author(s): K. Matsubayashi, M. Heda, I. Umehara, N. Katayama, K. Ohgushi, A. Yamada, K. Munakata, T. Matsumoto, Y. Uwatoko
  • Journal Title: J. Phys.: Conf. Ser. Volume: 215 Pages: 012187
  • Peer Reviewed
• [Journal Article] Magnetic Field Effect on Yb-Based Heavy Fermions near Magnetic-Nonmagnetic Transition (2010)
  • Author(s): T. Mite, T. Koyama, K. Nakagawara, T. Ishida, K. Ueda, T. Kohara, K. Matsubayashi, Y. Saiga, K. Munakata, Y. Uwatoko, M. Mizumaki, N. Kawamura
  • Journal Title: ActaPhysica Polonica A Volume: 118 Pages: 870
  • Peer Reviewed
• [Presentation] 価数揺動物質YbNi_3Ga_9における圧力誘起強磁性 (2012)
  • Author(s): 平山貴士,松林和幸,山下哲郎,大原繁男,上床美也
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学西宮上ケ原キャンパス
  • Year and Date: 2012-03-27
• [Presentation] 重い電子系物質YbCo_2Zn_<20>の圧力下・磁場中における量子臨界性 (2012)
  • Author(s): 山中里奈、松林和幸、上床美也、河江達也
  • Organizer: 日本物理学会第67回年次大会
  • Place of Presentation: 関西学院大学,西宮上ケ原キャンパス
  • Year and Date: 2012-03-27
• [Presentation] Pressure-and Magnetic Field-induced Quantum Critical Phenomena in Yb-based Heavy Fermion Compounds (2011)
  • Author(s): K. Matsubayashi
  • Organizer: International workshop on heavy fermions : TOKIMEKI 2011
  • Place of Presentation: 大阪大学
  • Year and Date: 2011-11-23
• [Presentation] 重い電子系物質YbCo_2Zn_<20>における圧力・磁場中相図 (2011)
  • Author(s): 松林和幸,山中里奈,才賀裕太,河江達也,上床美也
  • Organizer: 日本物理学会2011秋季大会
  • Place of Presentation: 富山大学五福キャンパス
  • Year and Date: 2011-09-23
• [Presentation] Heat Capacity Measurement of Heavy Fermion YbCo_2Zn_<20> under Magnetic Field (2011)
  • Author(s): R. Yamanaka, K. Matsubayashi, Y. Saiga, T. Kawae, Y. Uwatoko
  • Organizer: Strongly Correlated Electron Systems Conference
  • Place of Presentation: Cambridge UK
  • Year and Date: 2011-09-02
• [Presentation] Low Temperature Properties of a Low Carrier Heavy Fermion YbPtSb (2011)
  • Author(s): K. Matsubayashi, R. Yamanaka, H. S. Suzuki, K. Munakata, Y. Uwatoko
  • Organizer: Strongly Correlated Electron Systems Conference
  • Place of Presentation: Cambridge UK
  • Year and Date: 2011-08-31
• [Presentation] Pressure-induced Suppression of the Antiferromagnetic Transition in YbNi_3Al_9 Single Crystal (2011)
  • Author(s): T. Hirayama, K. Matsubayashi, T. Yamashita, S. Ohara, K. Munakata, Y. Uwatoko
  • Organizer: Strongly Correlated Electron Systems Conference
  • Place of Presentation: Cambridge UK
  • Year and Date: 2011-08-30
• [Presentation] 銀系新材料を用いた高圧・磁場中比熱測定装置の開発 (2010)
  • Author(s): 山中里奈、松林和幸、上床美也、河江達也
  • Organizer: 第51回高圧討論会
  • Place of Presentation: 仙台市戦災復興記念館
  • Year and Date: 2010-10-20
• [Presentation] High Pressure and Magnetic Field Effecton Heavy Fermion Compound YbCo_2Zn_<20> (2010)
  • Author(s): 松林和幸
  • Organizer: 重い電子系国際会議(ICHE2010)
  • Place of Presentation: 首都大学東京
  • Year and Date: 2010-09-19
• [Presentation] YbT_2Zn_<20>(T=Co, Rh, Ir)における圧力下物性 (2010)
  • Author(s): 松林和幸
  • Organizer: 新学術領域研究「重い電子系の形成と秩序化」ワークショップ～希薄f電子格子系の新しい秩序～
  • Place of Presentation: 高知大学
  • Year and Date: 2010-08-02
• [Book] 静水圧下の低温物性測定技術 (2011)
  • Author(s): 松林和幸,松本武彦,上床美也,辺土正人
  • Total Pages: 423-429
  • Publisher: 日本物理学会誌