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17.3: First‐Principles Study on Secondary Electron Emission of MgO (200) and (111) Surfaces
Author(s) -
Dai Kai,
Tu Yan,
Yang Lanlan,
Li Qiaofen,
Tolner Harm
Publication year - 2014
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1002/j.2168-0159.2014.tb00058.x
Subject(s) - materials science , electron , surface (topology) , band gap , flat surface , atomic physics , optoelectronics , physics , geometry , composite material , quantum mechanics , mathematics
The electronic structures of flat (200), flat (111) and hydrogenated (111) surfaces are investigated based on first‐principles calculations. The results reveal that SEE coefficients γ increase in the following order: flat(111)< flat(200)< hydrogenated(111). It is also found that hydrogenation on the MgO (111) surface can reduce band gap and increase the γ value.