139La NMR and 75As NQR study of the As-based filled skutterudite LaOs4As12

被引：5

作者：

Nowak, B. ^{[1
]}

Zogal, O. ^{[1
]}

Henkie, Z. ^{[1
]}

Maple, M. B. ^{[2
]}

机构：

[1] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland

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

来源：

SOLID STATE COMMUNICATIONS | 2011年 / 151卷 / 07期

关键词：

Superconductors; Spin dynamics; Nuclear resonances; RATTLING PHONONS; LA-NMR; FLUCTUATIONS; SUPERCONDUCTIVITY; RELAXATION; FE; OS; RU;

D O I：

10.1016/j.ssc.2011.01.012

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

We report experimental results of nuclear magnetic resonance (NMR) at the La site and nuclear quadrupole resonance (NQR) at the As site in the normal state of the superconducting compound LaOs4As12. Measurements have been performed on powder sample obtained from high quality single crystals. The temperature dependences of the nuclear spin-lattice relaxation rates, 1/T-1, of As-75 and La-139 nuclei were measured. No scaling between them was found indicating a local character of relaxation processes. The relaxation of As-75 nuclei can consistently be understood in terms of antiferromagnetic spin fluctuations, as deduced from the T-dependence of (1/T1T) =C/(T-theta)(1/2). (C) 2011 Published by Elsevier Ltd

引用

页码：550 / 552

页数：3

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