THE ADSORPTION OFAuONSi(111)-7 × 7SURFACE: A FIRST-PRINCIPLES STUDY

Yinghui Zhou, Qi-Hui Wu, Shuping Li and Junyong Kang ()
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Yinghui Zhou: Semiconductor Photonics Research Center, Department of Physics, Xiamen University, Xiamen 361005, China
Qi-Hui Wu: Semiconductor Photonics Research Center, Department of Physics, Xiamen University, Xiamen 361005, China
Shuping Li: Semiconductor Photonics Research Center, Department of Physics, Xiamen University, Xiamen 361005, China
Junyong Kang: Semiconductor Photonics Research Center, Department of Physics, Xiamen University, Xiamen 361005, China

Surface Review and Letters (SRL), 2007, vol. 14, issue 04, 657-660

Abstract: The initial stage ofAuadsorption on theSi(111)-7 × 7surface has been investigated by the first-principles calculations. Different configurations have been considered and the high coordination sites were determined as the most possible places for theAuadsorption. The diffusion barriers forAuatoms on theSisurface have also been evaluated. The results indicated that theAuatoms could diffuse from the top of theSirest atoms to the high coordination sites only by overcoming a small barrier of 0.11 eV.

Keywords: Adsorption; Au; Si(111)-7 × 7; first-principles calculation (search for similar items in EconPapers)
Date: 2007
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DOI: 10.1142/S0218625X07010020

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