Abinitiocalculations of the reflectance anisotropy spectrum
作者:
J. M. Bass,
C. C. Matthai,
期刊:
Journal of Vacuum Science&Technology B: Microelectronics and Nanometer Structures Processing, Measurement, and Phenomena
(AIP Available online 1996)
卷期:
Volume 14,
issue 4
页码: 3075-3079
ISSN:1071-1023
年代: 1996
DOI:10.1116/1.589067
出版商: American Vacuum Society
关键词: GALLIUM ARSENIDES;ELECTRONIC STRUCTURE;ENERGY−LEVEL TRANSITIONS;ENERGY−LEVEL DENSITY;GaAs
数据来源: AIP
摘要:
Using anabinitio, nonlocal pseudopotential method, we have calculated the reflectance anisotropy spectrum for a particular model of the GaAs(001)c(4×4) reconstructed surface. Excellent agreement with experiment was obtained, supporting the chosen model. The reflectance anisotropy was found to originate from optical transitions between bulk like valence band states and surface states in the conduction band. The nature and distribution of the electronic states involved is discussed.
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