Probing the generalized magicity of Ag nanoclusters constructed on Si(111) by atomic manipulation
文献类型：期刊论文
| 作者 | Fangfei Ming; Guohua Zhong; Qin Liu; Kedong Wang; Zhenyu Zhang; Xudong Xiao |
| 刊名 | PHYSICAL REVIEW B
 |
| 出版日期 | 2013 |
| 英文摘要 | Using scanning tunneling microscopy supplemented with first-principles calculations, we examine all the thermally activated atomistic processes of Agn (n = 1–26) constructed atom-by-atom on a Si(111)-(7×7) substrate, and we exploit such cluster dynamical information to further determine the energetic stability (or magicity) of the clusters. By generalizing the traditional concept of cluster magicity solely based on cluster association/dissociation to also include various complex collective cluster motions, we identify the existence of two classes of magic clusters. The most stable class, Ag10 and Ag25, is defined by geometrical shell closure; the less stable class of Agn (n = 3, 5, 13, 16, 19) is associated with lower kinetic barriers against internal restructuring of, or atom detachment from, their respective clusters of neighboring sizes. Our detailed analysis also reveals that the substrate effect, rather than the number of bonds within the clusters, dominates the cluster stabilities. The conceptual advances gained in the present study are broadly applicable to many related cluster systems in contact with external media, and they are expected to be instrumental in tuning the dynamical behaviors of clusters in surface catalysis, nanoplasmonics, and other technological areas. |
| 收录类别 | SCI |
| 原文出处 | http://journals.aps.org/prb/abstract/10.1103/PhysRevB.88.125432 |
| 语种 | 英语 |
| 源URL | [http://ir.siat.ac.cn:8080/handle/172644/4370]  |
| 专题 | 深圳先进技术研究院_集成所 |
| 作者单位 | PHYSICAL REVIEW B |
| 推荐引用方式 GB/T 7714 | Fangfei Ming,Guohua Zhong,Qin Liu,et al. Probing the generalized magicity of Ag nanoclusters constructed on Si(111) by atomic manipulation[J]. PHYSICAL REVIEW B,2013. |
| APA | Fangfei Ming,Guohua Zhong,Qin Liu,Kedong Wang,Zhenyu Zhang,&Xudong Xiao.(2013).Probing the generalized magicity of Ag nanoclusters constructed on Si(111) by atomic manipulation.PHYSICAL REVIEW B. |
| MLA | Fangfei Ming,et al."Probing the generalized magicity of Ag nanoclusters constructed on Si(111) by atomic manipulation".PHYSICAL REVIEW B (2013). |
入库方式： OAI收割
来源：深圳先进技术研究院
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。