| Bi- and Au-Induced Reconstructions on GaAs（001）-2 × 4 Surface |
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| 引用本文： | 唐喆,杨身园,江颖,王文新,贾金锋,薛其坤,王恩哥,吴克辉.Bi- and Au-Induced Reconstructions on GaAs（001）-2 × 4 Surface[J].中国物理快报,2008,25(8):2977-2980. |
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| 作者姓名： | 唐喆 杨身园 江颖 王文新 贾金锋 薛其坤 王恩哥 吴克辉 |
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| 作者单位： | Institute of Physics, Chinese Academy of Sciences, Beijing 100080 |
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| 基金项目： | Supported by the National Natural Science Foundation of China under Grant No 10574146, and the National Basic Research Programme of China under Grant No 2007CB936800. |
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| 摘 要： | Submonolayer Bi and Au adsorptions on the GaAs（001）-2× 4 surface are investigated by scanning tunnelling microscopy, low energy electron diffraction and first-principles calculations. The 1 ×4 and 3 × 4 reconstructed surface induced by Bi and Au, respectively, are revealed and their structural models are proposed based on experiments and first-principles calculations. Moreover, the validity of the recently proposed generalized electron counting （GEC） model Phys. Rev. Lett. 97 （2006） 126103] is examined in detail by using the two surfaces. The GEC model perfectly explains the structural features, such Bi-1 × 4 surface and the 3x arrangement of four-atom Au as the characteristic short double-line structure in the clusters.
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| 关 键 词： | 铋 金 GaAs 构造模式 |
| 收稿时间： | 2008-5-12 |
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