THE QUASIPHONON MODEL OF AMORPHOUS SOLIDS AND THE PERCUS-YEVICK APPROXIMATION

被引：2

作者：

KOVALENKO, NP

KRASNY, YP

WECK, G

机构：

[1] HUMBOLDT UNIV,O-1040 BERLIN,GERMANY

[2] ODESSA TECH FOOD IND INST,ODESSA 270108,UKRAINE,USSR

来源：

PHYSICA STATUS SOLIDI B-BASIC RESEARCH | 1991年 / 166卷 / 01期

关键词：

GLASS;

D O I：

10.1002/pssb.2221660112

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

The quasiphonon model is used to describe thermodynamical features of amorphous solids in the low temperature range (T almost-equal-to 20 to 50 K). Using the r-representation of the particle interaction potential and correlation functions the quasiphonon dispersion relation omega-alpha-(k) of binary amorphous solids may be calculated analytically in the Percus-Yevick approximation. This relation is obtained in a form with the characteristic roton-similar minimum in the shortwave range of k. Even this minimum could be the reason for anomalous thermodynamical properties of such amorphous systems.

引用

页码：117 / 124

页数：8