Novel quantum criticality in CeRu2Si2 near absolute zero observed by thermal expansion and magnetostriction
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...
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| Veröffentlicht in: | Physical review letters 2008-12, Vol.101 (25), p.256402-256402 |
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| container_title | Physical review letters |
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| creator | Yoshida, J Abe, S Takahashi, D Segawa, Y Komai, Y Tsujii, H Matsumoto, K Suzuki, H Onuki, Y |
| description | 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. |
| doi_str_mv | 10.1103/PhysRevLett.101.256402 |
| format | Article |
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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. 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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.</abstract><cop>United States</cop><pmid>19113729</pmid><doi>10.1103/PhysRevLett.101.256402</doi><tpages>1</tpages><oa>free_for_read</oa></addata></record> |
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| title | Novel quantum criticality in CeRu2Si2 near absolute zero observed by thermal expansion and magnetostriction |
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