ULTRASONIC-ATTENUATION NEAR THE 208-K PHASE-TRANSITION OF RBAG4I5

被引：6
作者：
LEUNG, KM
HUBER, DL
机构：
[1] Department of Physics, University of Wisconsin, Madison
来源：
PHYSICAL REVIEW LETTERS | 1979年 / 42卷 / 07期
关键词：
D O I：
10.1103/PhysRevLett.42.452
中图分类号：
O4 [物理学];
学科分类号：
0702 ;
摘要：
Using general expressions for the velocity and ultrasonic attenuation coefficient we have analyzed ultrasonic data for the 208-K phase transition in RbAg4I5. From fitting the velocity in the high-temperature phase we obtain values for the strain and pseudospin coupling constants. We extract the intrinsic pseudospin relaxation rate from an analysis of the attenuation. The Jahn-Teller model is found to provide a good description of the ultrasonic behavior associated with the phase transition. © 1979 The American Physical Society.
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页码：452 / 456
页数：5
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