PHONON-DISPERSION SHEETS AND GROUP VELOCITIES IN GAAS

被引：4

作者：

DORNER, B ^{[1
]}

STRAUCH, D ^{[1
]}

机构：

[1] UNIV REGENSBURG,THEORET PHYS,W-8400 REGENSBURG,GERMANY

来源：

JOURNAL OF PHYSICS-CONDENSED MATTER | 1990年 / 2卷 / 06期

关键词：

D O I：

10.1088/0953-8984/2/6/007

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Phonon frequencies on two dispersion sheets for TA modes have been determined by inelastic neutron scattering on the (001) and the (011) planes at 12 K. Phonon group velocities for these phonons have been derived. The results are used to calculate heat transport properties. Comparison with results from phonon-focusing experiments shows good agreement and yields an estimate of the lifetime of ballistic phonons.

引用

页码：1475 / 1483

页数：9

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