Details of Sample Dependence and Transport Properties of URu2Si2

被引：42

作者：

Matsuda, Tatsuma D. ^{[1
,2
]}

Hassinger, Elena ^{[2
]}

Aoki, Dai ^{[2
]}

Taufour, Valentin ^{[2
]}

Knebel, Georg ^{[2
]}

Tateiwa, Naoyuki ^{[1
]}

Yamamoto, Etsuji ^{[1
]}

Haga, Yoshinori ^{[1
]}

Onuki, Yoshichika ^{[1
,3
]}

Fisk, Zachary ^{[1
,4
]}

Flouquet, Jacques ^{[2
]}

机构：

[1] JAEA, ASRC, Tokai, Ibaraki 3191195, Japan

[2] CEA Grenoble, INAC SPSMS, F-38054 Grenoble, France

[3] Osaka Univ, Grad Sch Sci, Osaka 5600043, Japan

[4] Univ Calif Irvine, Irvine, CA 92697 USA

来源：

JOURNAL OF THE PHYSICAL SOCIETY OF JAPAN | 2011年 / 80卷 / 11期

关键词：

resistivity; specific heat; superconductivity; hidden order; URu2Si2; ELECTRON SUPERCONDUCTOR URU2SI2; HIDDEN-ORDER; PHASE-DIAGRAM; SYSTEM URU2SI2; FERMI-SURFACE; PRESSURE; TRANSITIONS; URANIUM; UPT3;

D O I：

10.1143/JPSJ.80.114710

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

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.

引用

页数：10

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