INTERACTION OF SOFT MODES AND SOUND-WAVES IN GLASSES

被引：386
|
作者：
BUCHENAU, U
GALPERIN, YM
GUREVICH, VL
PARSHIN, DA
RAMOS, MA
SCHOBER, HR
机构：
[1] UNIV HEIDELBERG, INST ANGEW PHYS, W-6900 HEIDELBERG, GERMANY
[2] AF IOFFE TECH PHYS INST, ST PETERSBURG 194021, USSR
[3] ST PETERSBURG STATE TECH UNIV, ST PETERSBURG 195251, USSR
[4] UNIV AUTONOMA MADRID, DEPT FIS MAT CONDENSADA, BAJAS TEMP LAB, E-28049 MADRID, SPAIN
来源：
PHYSICAL REVIEW B | 1992年 / 46卷 / 05期
关键词：
D O I：
10.1103/PhysRevB.46.2798
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The interaction of sound waves with tunneling, relaxational, and resonant vibrational states in glasses is investigated within the soft-potential model. The same bilinear coupling constant is assumed for all three different kinds of soft modes. The model reproduces the results of the tunneling model at low temperatures and frequencies. In addition, it explains the fast rise of the relaxational absorption above 1 K and the plateau in the thermal conductivity around 5 K. The universal features of the sound absorption in glasses are described with good accuracy up to 20 K.
引用
收藏
页码：2798 / 2808
页数：11
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