Elastic Constants of Filled Skutterudite LaRu4As12

被引：2
|
作者：
Yanagisawa, T. [1 ]
Saitoh, H. [2 ]
Hidaka, H. [2 ]
Amitsuka, H. [2 ]
Cichorek, T. [3 ]
Henkie, Z. [3 ]
Maple, M. B. [4 ,5 ]
机构：
[1] Hokkaido Univ, Creat Res Inst, Sapporo, Hokkaido 0010021, Japan
[2] Hokkaido Univ, Dept Phys, Sapporo, Hokkaido 0600810, Japan
[3] Polish Acad Sci, Inst Low Temp & Struct Res, PL-50950 Wroclaw, Poland
[4] Univ Calif San Diego, Dept Phys, La Jolla, CA 92093 USA
[5] Univ Calif San Diego, Inst Pure & Appl Phys Sci, La Jolla, CA 92093 USA
来源：
INTERNATIONAL CONFERENCE ON STRONGLY CORRELATED ELECTRON SYSTEMS (SCES 2010) | 2011年 / 273卷
基金：
美国国家科学基金会;
关键词：
D O I：
10.1088/1742-6596/273/1/012065
中图分类号：
O469 [凝聚态物理学];
学科分类号：
070205 ;
摘要：
Ultrasonic measurements with frequencies varying between 73 and 160 MHz were performed for the LaRu4As12 single crystal. This As-based filled skutterudite compound is a BCS-type superconductor with T-SC as high as 10.3 K. In order to examine a presence of off-center rattling motion in LaRu4As12, we measured elastic constants C-L111 = (C-11 2C(12) 4C(44))/3 and C-T111 = (C-11- C-12 +4C(44))/3, which are related to longitudinal and transverse sound waves propagating along the [111] direction, respectively. No ultrasonic dispersion was found in the whole temperature range from 1.4 to 300 K.
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页数：4
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