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.
引用
收藏
页码：3100 / 3104
页数：5
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