Twofold symmetry in the surface electronic structure of ZnSe(001)-c(2×2): Theory and experiment
Surface Science(2005)
摘要
Surface electronic band structure of ZnSe(001)-c(2×2) calculated using ab initio methods is compared to angle-resolved photoemission data. The experimental photoelectron spectra clearly reveal the surface-induced breaking of the fourfold bulk symmetry. Predicted surface-related features are identified in the experimental data and their origin is determined by comparison with layer-resolved band-structure calculations.
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关键词
Angle-resolved photoemission,Density functional calculations,Surface relaxation and reconstruction
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