μSR studies on LaOs4Sb12 in comparison with the time-reversal-symmetry-broken superconductor PrOs4Sb12

被引：14

作者：

Aoki, Y

Higemoto, W

Sanada, S

Ohishi, K

Saha, SR

Koda, A

Nishiyama, K

Kadono, R

Sugawara, H

Sato, H

机构：

[1] Tokyo Metropolitan Univ, Dept Phys, Hachioji, Tokyo 1920397, Japan

[2] J AERI, Adv Sci Res Ctr, Tokai, Ibaraki 3191195, Japan

[3] KEK, High Energy Accelerator Res Org, Inst Mat Struct Sci, Ibaraki 3050801, Japan

[4] Grad Univ Adv Studies, SOKENDAI, Ibaraki 3050801, Japan

来源：

PHYSICA B-CONDENSED MATTER | 2005年 / 359卷

关键词：

PrOs4Sb12; mu SR; time-reversal-symmetry breaking superconductivity;

D O I：

10.1016/j.physb.2005.01.255

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We have studied the zero-field muon spin relaxation (ZF-mu SR) on a filled-skutterudite superconductor LaOs4Sb12 (T-c = 0.74K) to compare with the time-reversal-symmetry (TRS)-broken superconductor PrOs4Sb12. The relaxation rate is independent of temperature down to 20 mK, suggesting that the absence of TRS breaking in LaOs4Sb12,. This finding provides convincing evidence for the Pr 4f-electrons playing an essential role for the realization of the TRS broken superconductivity in PrOs4Sb12. (c) 2005 Elsevier B.V. All rights reserved.

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页码：895 / 897

页数：3

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