STUDY OF A MICROSCOPIC MODEL FOR 2-LEVEL SYSTEM DYNAMICS IN GLASSES

被引：16

作者：

SUAREZ, A ^{[1
]}

SILBEY, R ^{[1
]}

机构：

[1] MIT,DEPT CHEM,CAMBRIDGE,MA 02139

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 30期

关键词：

D O I：

10.1021/j100081a016

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

We propose a model for the low-temperature excitations in glasses, which have been the object of recent investigations by means of nonlinear optical techniques. The experimental evidence strongly suggests the presence in these amorphous materials of configurational two-level systems, which are coupled via the phonon field to the chromophore whose optical response is being probed. A microscopic description for the relevant interactions is developed and the connections between the exact dynamics within this description and the stochastic sudden-jump model are drawn by means of a path integral method.

引用

页码：7329 / 7336

页数：8

共 30 条

[1] ANOMALOUS LOW-TEMPERATURE THERMAL PROPERTIES OF GLASSES AND SPIN GLASSES [J].