OFF-CENTER ATOMIC DISPLACEMENTS IN ZINCBLENDE SEMICONDUCTOR

被引:59
|
作者
WEI, SH
ZHANG, SB
ZUNGER, A
机构
[1] National Renewable Energy Laboratory, Golden
关键词
D O I
10.1103/PhysRevLett.70.1639
中图分类号
O4 [物理学];
学科分类号
0702 ;
摘要
We have studied theoretically the conditions for the occurrence of spontaneous off-center atomic displacements in pure zinc-blende semiconductors. A pseudo Jahn-Teller coupling of a chemically active valence d band with an s-like conduction band is predicted to lead to such a metastability. All-electron density functional calculations confirm that this is the case in CuCl. The unusual experimental manifestations of this metastability are outlined.
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页码:1639 / 1642
页数:4
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