Time-reversal symmetry-breaking superconductivity in heavy-fermion PrOs4Sb12 detected by muon-spin relaxation -: art. no. 067003

被引：287
|
作者：
Aoki, Y [1 ]
Tsuchiya, A
Kanayama, T
Saha, SR
Sugawara, H
Sato, H
Higemoto, W
Koda, A
Ohishi, K
Nishiyama, K
Kadono, R
机构：
[1] Tokyo Metropolitan Univ, Dept Phys, Tokyo 1920397, Japan
[2] High Energy Accelerator Res Org, Inst Mat Struct Sci, Tsukuba 3050801, Japan
[3] Grad Univ Adv Studies, SOKENDAI, Tsukuba, Ibaraki, Japan
来源：
PHYSICAL REVIEW LETTERS | 2003年 / 91卷 / 06期
关键词：
D O I：
10.1103/PhysRevLett.91.067003
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
We report on muon-spin relaxation measurements of the 4f(2)-based heavy-fermion superconductor filled-skutterudite PrOs(4)Sb(12). The results reveal the spontaneous appearance of static internal magnetic fields below the superconducting transition temperature, providing unambiguous evidence for the breaking of time-reversal symmetry in the superconducting state. A discussion is made on which of the spin or orbital component of Cooper pairs carries a nonzero momentum.
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页数：4
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