Theory of the excitation of the vibrational mode of an adatom-substrate system under a resonant laser field
文献类型：期刊论文
| 作者 | Ma, J ; Wang, EG ; Zhang, ZY ; Wu, BA |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2008 |
| 卷号 | 78期号:12 |
| 关键词 | H STRETCHING MODES SI(111)-H SURFACE X-1) SURFACE SI ENERGY HYDROGEN RELAXATION DESORPTION MOLECULES H/SI(111) |
| ISSN号 | 1098-0121 |
| 通讯作者 | Ju, S (reprint author), Suzhou Univ, Dept Phys, Suzhou 215006, Peoples R China. |
| 中文摘要 | We present a theoretical description of the excitation of a stretch mode and energy transfers among different degrees of freedom within an adatom-substrate system under an infrared resonant laser field. There are two competing mechanisms via which the adatom-substrate bond can be highly excited: The pooling process and the absorption of multiphotons. We show that if the frequency dispersion of the laser is much smaller than the anharmonicity of the selected mode, namely, if the laser can be treated as monochromatic, the pooling process is dominant in exciting the stretch mode to highly vibrational states. As the frequency dispersion of the laser increases, the excitation to highly vibrational states by direct photon absorption becomes more dominant. We further show that the dependences of the two mechanisms on photon frequency are quite different: If pooling dominates, there is only a single peak in the excitation probability; if multiphoton absorption dominates, there may exist several peaks and the main peak may exhibit a redshift. These findings are illustrated using the H/Si(111) system as a prototype example. |
| 收录类别 | SCI |
| 资助信息 | Chinese Academy of Sciences; NSF of China [10504040]; 973 Project of China [2005CB724500, 2006CB921400]; DOE [DE-FG02-03ER46091]; Division of Materials Sciences and Engineering, Office of Basic Energy Sciences; U. S. National Science Foundation [DMR-0606485] |
| 语种 | 英语 |
| 公开日期 | 2013-09-23 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/45699]  |
| 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, J,Wang, EG,Zhang, ZY,et al. Theory of the excitation of the vibrational mode of an adatom-substrate system under a resonant laser field[J]. PHYSICAL REVIEW B,2008,78(12). |
| APA | Ma, J,Wang, EG,Zhang, ZY,&Wu, BA.(2008).Theory of the excitation of the vibrational mode of an adatom-substrate system under a resonant laser field.PHYSICAL REVIEW B,78(12). |
| MLA | Ma, J,et al."Theory of the excitation of the vibrational mode of an adatom-substrate system under a resonant laser field".PHYSICAL REVIEW B 78.12(2008). |
入库方式： OAI收割
来源：物理研究所
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