Dual Au-Si bonding character and Au surfactant effect on Au/Si(111) surfaces

被引：0
|
作者：
Murayama, M [1 ]
Nakayama, T [1 ]
Natori, A [1 ]
机构：
[1] Univ Electrocommun, Dept Elect Engn, Chofu, Tokyo 1828585, Japan
来源：
PROCEEDINGS OF THE 25TH INTERNATIONAL CONFERENCE ON THE PHYSICS OF SEMICONDUCTORS, PTS I AND II | 2001年 / 87卷
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中图分类号：
TM [电工技术]; TN [电子技术、通信技术];
学科分类号：
0808 ; 0809 ;
摘要：
dElectronic structures of Au/Si(111) surfaces have been calculated by the ab initio pseudopotential method in a local density approximation. We found that there are strong electronic-state couplings between Au trimers and surface Si, which induce the charge transfer from Si to Au-Si covalent bonds and the charge redistribution from d to s orbitals around Au. It is shown that Au overlayer acts as a surfactant through Au-Si rebonding during Si growth.
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页码：341 / 342
页数：2
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