Muon spin relaxation and isotropic pairing in superconducting PrOs4Sb12 -: art. no. 157001

被引：99

作者：

MacLaughlin, DE ^{[1
]}

Sonier, JE

Heffner, RH

Bernal, OO

Young, BL

Rose, MS

Morris, GD

Bauer, ED

Do, TD

Maple, MB

机构：

[1] Univ Calif Riverside, Dept Phys, Riverside, CA 92521 USA

[2] Simon Fraser Univ, Dept Phys, Burnaby, BC V5A 1S6, Canada

[3] Canadian Inst Adv Res, Toronto, ON M5G 1Z8, Canada

[4] Los Alamos Natl Lab, Los Alamos, NM 87545 USA

[5] Calif State Univ Los Angeles, Dept Phys & Astron, Los Angeles, CA 90032 USA

[6] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA

来源：

PHYSICAL REVIEW LETTERS | 2002年 / 89卷 / 15期

基金：

加拿大自然科学与工程研究理事会; 美国国家科学基金会;

关键词：

D O I：

10.1103/PhysRevLett.89.157001

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

Transverse-field muon-spin rotation measurements in the vortex-lattice of the heavy-fermion (HF) superconductor PrOs4Sb12 yield a temperature dependence of the magnetic penetration depth lambda indicative of an isotropic or nearly isotropic energy gap. This is not seen to date in any other HF superconductor and is a signature of isotropic pairing symmetry, possibly related to a novel nonmagnetic "quadrupolar Kondo" HF mechanism in PrOs4Sb12. The T=0 relaxation rate sigma(s)(0)=0.91(1) mus(-1) yields an estimated magnetic penetration depth lambda(0)=3440(20) Angstrom, which is considerably shorter than in other HF superconductors.

引用

页码：157001/1 / 157001/4

页数：4

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