Formation and evolution of a self-organized hierarchy of Ge nanostructures on Si(111)-(7x7): STM observations and first-principles calculations
文献类型：期刊论文
| 作者 | Ma, HF ; Qin, ZH ; Xu, MC ; Shi, DX ; Gao, HJ ; Wang, SW ; Pantelides, ST |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2007 |
| 卷号 | 75期号:16 |
| ISSN号 | 1098-0121 |
| 中文摘要 | We report scanning-tunneling-microscopy observations and first-principles calculations for the formation and evolution of self-organized Ge nanostructures on Si(111)-(7x7) surfaces for Ge coverages up to 0.5 ML. We show that individual Ge atoms initially form a triangular lattice. At higher coverages, Ge nanoparticles 1 nm in diameter gradually form in both the faulted and unfaulted half unit cells with an initial preference in the faulted halves, ultimately driving ordered hexagonal arrays. The underlying 7x7 surface periodicity, the triangular single-Ge lattice, and the nanoparticle hexagonal superstructures coexist. Charge transfer from Si adatoms to Ge nanoparticles is shown to play a key role in the self-organization. |
| 收录类别 | SCI |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/38338]  |
| 专题 | 物理研究所_物理所公开发表论文_物理所公开发表论文_期刊论文 |
| 推荐引用方式 GB/T 7714 | Ma, HF,Qin, ZH,Xu, MC,et al. Formation and evolution of a self-organized hierarchy of Ge nanostructures on Si(111)-(7x7): STM observations and first-principles calculations[J]. PHYSICAL REVIEW B,2007,75(16). |
| APA | Ma, HF.,Qin, ZH.,Xu, MC.,Shi, DX.,Gao, HJ.,...&Pantelides, ST.(2007).Formation and evolution of a self-organized hierarchy of Ge nanostructures on Si(111)-(7x7): STM observations and first-principles calculations.PHYSICAL REVIEW B,75(16). |
| MLA | Ma, HF,et al."Formation and evolution of a self-organized hierarchy of Ge nanostructures on Si(111)-(7x7): STM observations and first-principles calculations".PHYSICAL REVIEW B 75.16(2007). |
入库方式： OAI收割
来源：物理研究所
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