Novel quantum criticality in CeRu2Si2 near absolute zero observed by thermal expansion and magnetostriction

• Yoshida J.

• Abe Satoshi

• Takahashi Daisuke Y.

• Segawa Y.

• Komai Yoko

• Tsujii Hirotsugu

• Matsumoto K.

• Suzuki H.

• Onuki Y.

• 阿部 聡

抄録

金沢大学理工研究域数物科学系

We report linear thermal expansion and magnetostriction measurements for CeRu2Si2 in magnetic fields up to 52.6 mT and at temperatures down to 1 mK. At high temperatures, this compound showed Landau-Fermi-liquid behavior: The linear thermal expansion coefficient and the magnetostriction coefficient were proportional to the temperature and magnetic field, respectively. In contrast, a pronounced non-Fermi-liquid effect was found below 50 mK. The negative contribution of thermal expansion and magnetostriction suggests the existence of an additional quantum critical point. © 2008 The American Physical Society.

収録刊行物

• Physical Review Letters

  Physical Review Letters 101 (25), 256402-, 2008-12-15

  American Physical Society

詳細情報

• CRID: 1390013795265316736
• NII論文ID: 120001047356
• NII書誌ID: AA00773679
• ISSN: 00319007
• DOI: 10.24517/00010991
• Web Site: http://hdl.handle.net/2297/14376
• 本文言語コード: en
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