THE DENSITY OF TUNNELING AND VIBRATIONAL-STATES OF GLASSES WITHIN THE SOFT-POTENTIAL MODEL

被引：37

作者：

RAMOS, MA ^{[1
]}

GIL, L ^{[1
]}

BRINGER, A ^{[1
]}

BUCHENAU, U ^{[1
]}

机构：

[1] FORSCHUNGSZENTRUM JULICH,INST FESTORPERFORSCH,W-5170 JULICH,GERMANY

来源：

PHYSICA STATUS SOLIDI A-APPLIED RESEARCH | 1993年 / 135卷 / 02期

关键词：

D O I：

10.1002/pssa.2211350213

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

Numerical calculations of the density of tunneling and vibrational states of glasses within the soft-potential model (an extension of the tunneling model to include soft vibrations) are reported and compared to analytical approximations. Using a specific assumption on the asymmetry of the soft potentials, one is able to describe the anomalous features of the specific heat C(p) and the thermal conductivity of glasses over the entire low temperature range, up to and including the peak in C(p)/T3 and the second rise of the thermal conductivity above the plateau.

引用

页码：477 / 492

页数：16

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