Si(111)-2×1重构表面的自动张量低能电子衍射研究  

Study of Si(111)-2 × 1 Reconstruction by Automated Tensor Low Energy Electron Diffraction

作　　者：邓丙成[1] 徐耕[2] 

机构地区：[1]广州大学理学院,广东广州510405 [2]中山大学物理系,广东广州510275

出　　处：《广州大学学报（综合版）》2001年第8期58-62,共5页Journal of Guangzhou University

摘　　要：使用自动张量低能电子衍射研究 Ｓｉ（１１１）．２×１重构表面，对１４个垂直入射非等价衍射束的分析表明，两个不同倾斜的π键链模型的混合能使理论计算与实验Ⅳ曲线的符合程度得到显著的改善．我们认为由于表面原子较大的表面振动，表面存在“劈裂位置”．The 2×1 Reconstruction of cleaved Si(111) surface was studied by Automated Tensor Low Energy Electron Diffraction. After 14 non-equivalent normal incident beams were analyzed, it was found that the agreement between calculation and experiment had great improvement as two different tilt π bonded-chain models were mixed. We pro-posed the existence of split-positions on the surface due to larger surface vibrations.

关 键 词：Si(111)-2×1 自动张量低能电子衍射 劈裂位置 硅 表面振动 重构表面 半导体 

分 类 号：O472.1[理学—半导体物理] O613.72[理学—物理]