期刊
JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN
卷 80, 期 11, 页码 -出版社
PHYSICAL SOC JAPAN
DOI: 10.1143/JPSJ.80.114710
关键词
resistivity; specific heat; superconductivity; hidden order; URu2Si2
资金
- Ministry of Education, Culture, Sports, Science and Technology (MEXT) [22740241, 21540373, 22540378, 20224015, 20102002, 23102726, G10]
- Japan Society of the Promotion of Science (JSPS)
- ERC
- French ANR
- Grants-in-Aid for Scientific Research [22740241, 21540373, 20102002, 23102726, 22540378, 20224015] Funding Source: KAKEN
Resistivity and specific heat measurements were performed in the low carrier unconventional superconductor URu2Si2 on various samples with very different qualities. The superconducting transition temperature (T-SC) and the hidden order transition temperature (T-HO) of these crystals were evaluated as a function of the residual resistivity ratio (RRR). In high quality single crystals the resistivity does not seem to follow a T-2 dependence above T-SC, indicating that the Fermi liquid regime is restricted to low temperatures. However, an analysis of the isothermal longitudinal magnetoresistivity points out that the T-2 dependence may be spoiled by residual inhomogeneous superconducting contribution. We discuss a possible scenario concerning the distribution of T-SC related with the fact that the hidden order phase is very sensitive to the pressure inhomogeneity.
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