LOCALIZED LOW-ENERGY EXCITATIONS IN 2 AMORPHOUS POLYMERS

被引：38

作者：

MATSUMOTO, DS ^{[1
]}

REYNOLDS, CL ^{[1
]}

ANDERSON, AC ^{[1
]}

机构：

[1] UNIV ILLINOIS,MAT RES LAB,URBANA,IL 61801

来源：

PHYSICAL REVIEW B | 1979年 / 19卷 / 08期

关键词：

D O I：

10.1103/PhysRevB.19.4277

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The low-temperature specific heat, the thermal conductivity, and the temperature dependences of ultrasonic velocities have been measured for two epoxies differing primarily in crosslink density. The difference between the two epoxies is explained by a factor of 1.5 difference in density of localized excitations. Below 1 K all data are accounted for quantitatively by the tunneling-states model. Above 1 K, however, the model does not explain both the plateau" in the thermal conductivities and the temperature dependences of the ultrasonic velocities without additional assumptions. © 1979 The American Physical Society."

引用

页码：4277 / 4281

页数：5

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