FAR INFRARED-ABSORPTION IN BULK AMORPHOUS RED PHOSPHORUS

被引：7

作者：

SHANABROOK, BV ^{[1
]}

LANNIN, JS ^{[1
]}

TAYLOR, PC ^{[1
]}

机构：

[1] USN,RES LAB,WASHINGTON,DC 20375

来源：

SOLID STATE COMMUNICATIONS | 1979年 / 32卷 / 12期

基金：

美国国家科学基金会;

关键词：

D O I：

10.1016/0038-1098(79)90884-6

中图分类号：

O469 [凝聚态物理学];

学科分类号：

070205 ;

摘要：

Far infrared absorption measurements have been performed above 30 cm-1 in bulk amorphous red P at 300 K. A number of low frequency spectral features are observed that are not present in the corresponding bulk amorphous As spectrum. Deep minima observed at 163 and 320 cm-1 in α(ω) and in the Raman spectra suggest that the phonon density of states is essentially divided into 3 bands. A calculation of the mean effective charge of the bands indicates weak coupling to the lowest frequency band. A comparison with the results in a-As suggests a less rapid frequency variation in the infrared coupling parameter at low frequencies in a-P. © 1979.

引用

页码：1279 / 1283

页数：5

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