Bonding configurations and collective patterns of Ge atoms adsorbed on Si(111)-(7 x 7)
文献类型：期刊论文
| 作者 | Wang, YL ; Gao, HJ ; Guo, HM ; Wang, S ; Pantelides, ST |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2005 |
| 卷号 | 94期号:10 |
| 关键词 | SCANNING TUNNELING MICROSCOPE ELECTRON-DIFFRACTION QUANTUM DOTS SURFACE CHEMISORPTION ENERGY 7X7 INTERFACE GERMANIUM DIFFUSION |
| ISSN号 | 0031-9007 |
| 通讯作者 | Wang, YL: Chinese Acad Sci, Inst Phys, Beijing Natl Lab Condensed Matter Phys, POB 603, Beijing 100080, Peoples R China. |
| 中文摘要 | We report scanning tunneling microscopy observations of Ge deposited on the Si(111)-(7 x 7) surface for a sequence of submonolayer coverages. We demonstrate that Ge atoms replace so-called Si adatoms. Initially, the replacements are random, but distinct patterns emerge and evolve with increasing coverage, until small islands begin to form. Corner adatom sites in the faulted half unit cells are preferred. First-principles density functional calculations find that adatom substitution competes energetically with a high-coordination bridge site, but atoms occupying the latter sites are highly mobile. Thus, the observed structures are indeed more thermodynamically stable. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/34285]  |
| 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 | Wang, YL,Gao, HJ,Guo, HM,et al. Bonding configurations and collective patterns of Ge atoms adsorbed on Si(111)-(7 x 7)[J]. PHYSICAL REVIEW LETTERS,2005,94(10). |
| APA | Wang, YL,Gao, HJ,Guo, HM,Wang, S,&Pantelides, ST.(2005).Bonding configurations and collective patterns of Ge atoms adsorbed on Si(111)-(7 x 7).PHYSICAL REVIEW LETTERS,94(10). |
| MLA | Wang, YL,et al."Bonding configurations and collective patterns of Ge atoms adsorbed on Si(111)-(7 x 7)".PHYSICAL REVIEW LETTERS 94.10(2005). |
入库方式： OAI收割
来源：物理研究所
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