True atomic resolution imaging of surface structure and surface charge on the GaAs(110)

被引:55
作者
Sugawara, Y [1 ]
Uchihashi, T [1 ]
Abe, M [1 ]
Morita, S [1 ]
机构
[1] Osaka Univ, Grad Sch Engn, Dept Elect Engn, Suita, Osaka 5650871, Japan
关键词
atomic resolution; electrostatic force microscope; atomic force microscope; defect;
D O I
10.1016/S0169-4332(98)00557-1
中图分类号
O64 [物理化学(理论化学)、化学物理学];
学科分类号
070304 ; 081704 ;
摘要
We demonstrated a novel method to detect the van der Weals and the electrostatic force interactions simultaneously on an atomic scale, which is based on frequency modulation detection method. For the first time, the surface structure and the surface charge at atomic-scale point defects on the GaAs(110) surface have been simultaneously resolved with true atomic resolution under ultra-high vacuum condition. From the bias voltage dependence of the image contrast, we can verify that the sign of the atomically resolved surface charge at the point defect was positive. (C) 1999 Elsevier Science B.V. All rights reserved.
引用
收藏
页码:371 / 375
页数:5
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