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First Principles Study Of Si(335)-au Surface

机译:Si(335)-au表面的第一性原理研究

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摘要

The structural and electronic properties of gold decorated Si(335) surface are studied by means of density-functional calculations. The resulting structural model indicates that the Au atoms substitute some of the Si atoms in the middle of the terrace in the surface layer. Calculated electronic band structure near the Fermi energy features two metallic bands, one coming from the step edge Si atoms and the other one having its origin in hybridization between the Au and neighboring Si atoms in the middle of the terrace. The obtained electronic bands remain in good agreement with photoemission data.
机译:通过密度泛函计算研究了金装饰的Si(335)表面的结构和电子性能。所得的结构模型表明,Au原子替代了表面层平台中间的一些Si原子。费米能量附近的计算电子带结构具有两个金属带,一个来自阶跃边缘Si原子,另一个来自于阶跃中间的Au和相邻的Si原子之间的杂化。所获得的电子频带与光发射数据保持良好一致性。

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