LONGITUDINAL ULTRASOUND IN THE HEAVY ELECTRON SUPERCONDUCTOR URU2SI2

被引：6
|
作者：
BULLOCK, GL [1 ]
SHIVARAM, BS [1 ]
HINKS, DG [1 ]
机构：
[1] ARGONNE NATL LABS,DIV MAT SCI & TECHNOL,ARGONNE,IL 60639
来源：
PHYSICA C | 1990年 / 169卷 / 5-6期
关键词：
D O I：
10.1016/0921-4534(90)90597-8
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
We report measurements of the attenuation and velocity of longitudinal sound waves with the wave-vector parallel to the a-axis in the heavy electron superconductor URu2Si2. In the superconducting state the attenuation shows an absorption peak at 0.8 K considerably below Tc=1.05 K. Associated with it an anomalously large decrease in the sound velocity is also observed. We also report sound velocity measurements in the normal state and compare it to results expected from the theory of a pinned density wave. © 1990.
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页码：497 / 500
页数：4
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