Electronic state of C(60) monolayer on Ag(111) before and after Yb intercalation
文献类型：期刊论文
| 作者 | Li, HN; Wang, XX; He, SL; Ibrahim, K; Qian, HJ; Su, R; Zhong, J; Abbas, MI; Hong, CH; Kui RX(奎热西)
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| 刊名 | SURFACE SCIENCE
 |
| 出版日期 | 2005 |
| 卷号 | 586期号:1-3页码:#REF! |
| 关键词 | 1 ML C(60)/Ag(111) bonding nature Yb intercalation photoemission |
| 通讯作者 | Li, HN (reprint author), Zhejiang Univ, Dept Phys, Hangzhou 310027, Peoples R China. |
| 英文摘要 | C(60) monolayer was prepared on Ag(l 11) surface in ultra-high vacuum environment. The electronic state was investigated by the synchrotron radiation photoemission technique. The results reveal the remarkable covalent component to the C(60)-Ag bonding, which was not observed in previously reported works. The bonding in the interface is primarily covalent with some ionic contribution. Two covalent bonding features were observed distinctly at similar to 4.1 and similar to 4.7 eV binding energy. These features are ascribed to the hybridization between the next highest occupied molecular orbital (HOMO-1) Of C(60) and the Ag 4d state. The work function of the C(60) monolayer on Ag(l 11) is determined to be 4.63 +/- 0.10 eV that is larger than that of the clean Ag(l 11) surface by 0.13 +/- 0.02 eV. Yb intercalation was carried out to investigate the valence evolution of the monolayer system. The spectral weight at the Fermi level increases substantially at low intercalation stage. After the filling of the lowest unoccupied molecular orbital (LUMO) band, the sample exhibits the semiconducting property for all the rest intercalation levels, and the electronic state departs from the simple band-filling scheme. The electrons may occupy either the hybridizing state or the Madelung-derived state. The above observations are drastically different from that for bulk Yb fullerides, indicating novel properties of rare-earth-metal intercalated C60 monolayer. (c) 2005 Elsevier B.V. All rights reserved. |
| 学科主题 | Chemistry; Physics |
| 类目[WOS] | Chemistry, Physical ; Physics, Condensed Matter |
| 收录类别 | SCI |
| WOS记录号 | WOS:000230290700007 |
| 公开日期 | 2016-05-03 |
| 源URL | [http://ir.ihep.ac.cn/handle/311005/225883]  |
| 专题 | 高能物理研究所_多学科研究中心 |
| 推荐引用方式 GB/T 7714 | Li, HN,Wang, XX,He, SL,et al. Electronic state of C(60) monolayer on Ag(111) before and after Yb intercalation[J]. SURFACE SCIENCE,2005,586(1-3):#REF!. |
| APA | Li, HN.,Wang, XX.,He, SL.,Ibrahim, K.,Qian, HJ.,...&洪才浩.(2005).Electronic state of C(60) monolayer on Ag(111) before and after Yb intercalation.SURFACE SCIENCE,586(1-3),#REF!. |
| MLA | Li, HN,et al."Electronic state of C(60) monolayer on Ag(111) before and after Yb intercalation".SURFACE SCIENCE 586.1-3(2005):#REF!. |
入库方式： OAI收割
来源：高能物理研究所
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