Isotope scattering of phonons in superlattices

被引：5

作者：

Tamura, S

机构：

[1] Department of Applied Physics, Hokkaido University

来源：

PHYSICAL REVIEW B | 1997年 / 56卷 / 19期

关键词：

D O I：

10.1103/PhysRevB.56.12440

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The elastic scattering rate of acoustic phonons in periodic superlattices due to isotopic atoms is calculated in the isotropic, continuum approximation. Unlike the case in bulk solids, the scattering rate depends on both the propagation direction and mode of phonons. Numerical examples are given for AlAs/GaAs and Al/W superlattices for propagation along the normal to the layer interfaces. We find that the scattering of longitudinal phonons is much weaker than that of transverse phonons for wide ranges of frequencies.

引用

页码：12440 / 12445

页数：6

共 16 条

[1]

[Anonymous], 1990, ACOUSTIC FIELDS WAVE

[2] TRANSVERSE ELASTIC-WAVES IN PERIODICALLY LAYERED INFINITE AND SEMI-INFINITE MEDIA [J].