ATOM-SELECTIVE IMAGING OF THE GAAS(110) SURFACE
ATOM-SELECTIVE IMAGING OF THE GAAS(110) SURFACE
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DOI:
10.1103/physrevlett.58.1192
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发表时间:
1987-03-23
影响因子:
8.6
通讯作者:
FEIN, AP
中科院分区:
文献类型:
--
作者:
FEENSTRA, RM;STROSCIO, JA;FEIN, AP
We report the first voltage-dependent scanning tunneling microscope images of a compound semiconductor surface, GaAs (110). Images show either only Ga atoms, or only As atoms, depending on the bias voltage. By combining voltage-dependent images with theoretical calculations, we quantitatively determine surface structural parameters which cannot be inferred from the images alone.