Competing ordered phases in URu2Si2:: Hydrostatic pressure and rhenium substitution

被引:44
作者
Jeffries, J. R. [1 ]
Butch, N. P.
Yukich, B. T.
Maple, M. B.
机构
[1] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[2] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA
[3] Lawrence Livermore Natl Lab, Livermore, CA 94550 USA
关键词
D O I
10.1103/PhysRevLett.99.217207
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
A persistent kink in the pressure dependence of the "hidden order'' (HO) transition temperature of URu2-xRexSi2 is observed at a critical pressure P-c = 15 kbar for 0 <= x <= 0.08. In URu2Si2, the kink at P-c is accompanied by the destruction of superconductivity, a change in the magnitude of a spin excitation gap, determined from electrical resistivity measurements; and a complete gapping of a portion of the Fermi surface (FS), inferred from a change in scattering and the competition between the HO state and superconductivity for FS fraction.
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页数:4
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