Symmetry-dependent screening of surface plasmons in ultrathin supported films: The case of Al/Si(111)
文献类型：期刊论文
| 作者 | Yuan, Z ; Jiang, Y ; Gao, Y ; Kall, M ; Gao, SW |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2011 |
| 卷号 | 83期号:16 |
| 关键词 | ALKALI-METAL OVERLAYERS DENSITY-RESPONSE FUNCTION ELECTRONIC EXCITATIONS THIN-FILMS ENERGY DISPERSION SCATTERING SUBSTRATE LAYERS PHASE |
| ISSN号 | 1098-0121 |
| 通讯作者 | Yuan, Z (reprint author), Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden. |
| 中文摘要 | A joint theoretical and experimental study of plasmon excitations for Al overlayers on Si(111) has been carried out. The presence of the substrate is found to drastically modify the hybridization and charge density response of the surface plasmons of the metal overlayers. The symmetric mode, which is polarized toward the Al/Si interface, is strongly damped in intensity and significantly redshifted in energy. However, the antisymmetric mode, which is polarized to the metal-vacuum interface, is essentially unaffected by the presence of the substrate. A low-energy acoustic plasmon mode is also found in a one monolayer Al film and is almost unaffected by the substrate. The calculated plasmon dispersions with substrate are in good agreement with experimental data measured by electron energy loss spectroscopy. Our results suggest that interaction and screening at the subnanometer scale are symmetry dependent, a conclusion that may have general implications in other thin films and related structures. |
| 收录类别 | SCI |
| 资助信息 | Foundation for the Strategic Research (SSF); Institutional Grant Program of STINT of Sweden; 973 plasmonics program of China |
| 语种 | 英语 |
| 公开日期 | 2013-09-24 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/54264]  |
| 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 | Yuan, Z,Jiang, Y,Gao, Y,et al. Symmetry-dependent screening of surface plasmons in ultrathin supported films: The case of Al/Si(111)[J]. PHYSICAL REVIEW B,2011,83(16). |
| APA | Yuan, Z,Jiang, Y,Gao, Y,Kall, M,&Gao, SW.(2011).Symmetry-dependent screening of surface plasmons in ultrathin supported films: The case of Al/Si(111).PHYSICAL REVIEW B,83(16). |
| MLA | Yuan, Z,et al."Symmetry-dependent screening of surface plasmons in ultrathin supported films: The case of Al/Si(111)".PHYSICAL REVIEW B 83.16(2011). |
入库方式： OAI收割
来源：物理研究所
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