NONLINEAR TLSS CONTRIBUTION TO THE SOUND-VELOCITY OF GLASSES

被引：15

作者：

PARSHIN, DA

机构：

[1] Institut für Angewandte Physik, Universität Heidelberg, Heidelberg, W-6900

来源：

ZEITSCHRIFT FUR PHYSIK B-CONDENSED MATTER | 1993年 / 91卷 / 03期

关键词：

D O I：

10.1007/BF01344066

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The nonlinear two-level systems (TLS's) contribution to the sound velocity of dielectric glasses has been calculated. The nonlinear effects become noticeable when amplitude d of the modulation of the TLS energy E is bigger than temperature T In the strong nonlinear case d much greater than T the contribution of TLS's to the sound velocity is proportional to (T/d)2. It is shown that their contribution depends logarithmically on the time of experiment.

引用

页码：367 / 372

页数：6

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