Na adsorption on the Si(111)-(7x7) surface: From two-dimensional gas to nanocluster array
文献类型：期刊论文
| 作者 | Wu, KH ; Fujikawa, Y ; Nagao, T ; Hasegawa, Y ; Nakayama, KS ; Xue, QK ; Wang, EG ; Briere, T ; Kumar, V ; Kawazoe, Y ; Zhang, SB ; Sakurai, T |
| 刊名 | PHYSICAL REVIEW LETTERS
 |
| 出版日期 | 2003 |
| 卷号 | 91期号:12 |
| 关键词 | SCANNING-TUNNELING-MICROSCOPY ALKALI-METAL ATOMS SI(111)7X7 SURFACE ELECTRONIC-STRUCTURE SI(100) METALLIZATION CHEMISORPTION INTERFACES TRANSITION DIFFUSION |
| ISSN号 | 0031-9007 |
| 通讯作者 | Wu, KH: Tohoku Univ, Inst Mat Res, Sendai, Miyagi 980855, Japan. |
| 中文摘要 | We have systematically investigated Na adsorption on the Si(111)-(7x7) surface at room temperature using scanning tunneling microscopy (STM). Below the critical coverage of 0.08 monolayer, we find intriguing contrast modulation instead of localized Na adsorbates, coupled with streaky noise in the STM images, which is accompanied by monotonic work function drop. Above the critical coverage, Na clusters emerge and form a self-assembled array. Combined with first-principles theoretical simulations, we conclude that the Na atoms on the (7x7) surface are, while strongly bound (similar to2.2 eV) to the surface, highly mobile in "basins" around the Si rest atoms, forming a two-dimensional gas phase at the initial coverage, and that the cluster at the higher coverage consists of six Na atoms together with three Si adatoms. |
| 收录类别 | SCI |
| 语种 | 英语 |
| 公开日期 | 2013-09-18 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/42454]  |
| 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 | Wu, KH,Fujikawa, Y,Nagao, T,et al. Na adsorption on the Si(111)-(7x7) surface: From two-dimensional gas to nanocluster array[J]. PHYSICAL REVIEW LETTERS,2003,91(12). |
| APA | Wu, KH.,Fujikawa, Y.,Nagao, T.,Hasegawa, Y.,Nakayama, KS.,...&Sakurai, T.(2003).Na adsorption on the Si(111)-(7x7) surface: From two-dimensional gas to nanocluster array.PHYSICAL REVIEW LETTERS,91(12). |
| MLA | Wu, KH,et al."Na adsorption on the Si(111)-(7x7) surface: From two-dimensional gas to nanocluster array".PHYSICAL REVIEW LETTERS 91.12(2003). |
入库方式： OAI收割
来源：物理研究所
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