Phase-field-crystal modelling of the (2 x 1)-(1 x 1) phase transitions of Si(001) and Ge(001) surfaces
文献类型：期刊论文
| 作者 | Xu, YC ; Liu, BG |
| 刊名 | JOURNAL OF PHYSICS D-APPLIED PHYSICS
 |
| 出版日期 | 2009 |
| 卷号 | 42期号:3 |
| 关键词 | SCANNING-TUNNELING-MICROSCOPY GROWTH GE RECONSTRUCTION DIFFRACTION SI(100) |
| ISSN号 | 0022-3727 |
| 通讯作者 | Xu, YC (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We propose a two-dimensional phase-field-crystal model for the (2 x 1)-(1 x 1) phase transitions of Si(0 0 1) and Ge(0 0 1) surfaces. The dimerization in the 2 x 1 phase is described with a phase-field-crystal variable which is determined by solving an evolution equation derived from the free energy. Simulated periodic arrays of the dimerization variable are consistent with scanning tunnelling microscopy images of the two dimerized surfaces. The calculated temperature dependence of the dimerization parameter indicates that normal dimers and broken ones coexist between the temperatures describing the characteristic temperature width of the phase transition, T(L) and T(H), and a first-order phase transition takes place at a temperature between them. The dimerization over the whole temperature is determined. These results are in agreement with experiment. This phase-field-crystal approach is applicable to phase transitions of other reconstructed surface phases, especially semiconductor n x 1 reconstructed surface phases. |
| 收录类别 | SCI |
| 资助信息 | Natural Science Foundation of China [10774180, 10874232, 60621091]; Chinese Department of Science and Technology [2005CB623602]; Chinese Academy of Sciences [KJCX2.YW.W09-5] |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/50857]  |
| 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 | Xu, YC,Liu, BG. Phase-field-crystal modelling of the (2 x 1)-(1 x 1) phase transitions of Si(001) and Ge(001) surfaces[J]. JOURNAL OF PHYSICS D-APPLIED PHYSICS,2009,42(3). |
| APA | Xu, YC,&Liu, BG.(2009).Phase-field-crystal modelling of the (2 x 1)-(1 x 1) phase transitions of Si(001) and Ge(001) surfaces.JOURNAL OF PHYSICS D-APPLIED PHYSICS,42(3). |
| MLA | Xu, YC,et al."Phase-field-crystal modelling of the (2 x 1)-(1 x 1) phase transitions of Si(001) and Ge(001) surfaces".JOURNAL OF PHYSICS D-APPLIED PHYSICS 42.3(2009). |
入库方式： OAI收割
来源：物理研究所
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