Investigation of the early stages of ZnSe epitaxy on GaAs(001) via scanning tunneling microscopy

被引:16
作者
Ahsan, S [1 ]
Kahn, A [1 ]
Pashley, MD [1 ]
机构
[1] PHILIPS RES LABS,BRIARCLIFF MANOR,NY 10510
关键词
D O I
10.1063/1.119373
中图分类号
O59 [应用物理学];
学科分类号
摘要
We present a scanning tunneling microscopy (STM) study of the initial stages of ZnSe deposition on the GaAs(001)-(2 X 4) surface. The deposition of elemental Se and of ZnSe an the bare GaAs surface induces considerable atomic disorder attributed to the Se-As exchange reaction. The deposition of elemental Zn weakens the 2X periodicity of the surface but induces no apparent changes in the STM images of the As dimers. Comparison of STM images of submonolayers of ZnSe on GaAs with and without a Zn pretreatment suggests that Zn reduces the interaction of Se with the GaAs surface. (C) 1997 American Institute of Physics.
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页码:2178 / 2180
页数:3
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