Dispersion of birefringence in AgGaS2 and CuGaS2

被引：6
|
作者：
Choi, IH
Eom, SH
Yu, PY
机构：
[1] UNIV CALIF BERKELEY,DEPT PHYS,BERKELEY,CA 94720
[2] UNIV CALIF BERKELEY,LAWRENCE BERKELEY LAB,BERKELEY,CA 94720
来源：
JOURNAL OF APPLIED PHYSICS | 1997年 / 82卷 / 06期
关键词：
D O I：
10.1063/1.366150
中图分类号：
O59 [应用物理学];
学科分类号：
摘要：
The natural birefringence in two chalcopyrite semiconductors AgGaS2 and CuGaS2 have been measured in the visible at both room and liquid helium temperatures. This birefringence exhibits a sign reversal and considerable dispersion near the band gap in both samples. A phenomenological quasicubic model which was proposed to explain the dispersion of natural birefringence in wurtzite-type II-VI semiconductors is found to explain our experimental results quite satisfactorily provided exciton effect is included in fitting the data at low temperature. (C) 1997 American Institute of Physics.
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收藏
页码：3100 / 3104
页数：5
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