Observation of Dirac Cone Warping and Chirality Effects in Silicene
文献类型：期刊论文
| 作者 | Feng, BJ ; Li, H ; Liu, CC ; Shao, TN ; Cheng, P ; Yao, YG ; Meng, S ; Chen, L ; Wu, KH |
| 刊名 | ACS NANO
 |
| 出版日期 | 2013 |
| 卷号 | 7期号:10页码:9049 |
| 关键词 | silicene Dirac fermion warping chirality scanning tunneling microscopy molecular beam epitaxy |
| ISSN号 | 1936-0851 |
| 通讯作者 | Chen, L (reprint author), Chinese Acad Sci, Inst Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | We performed low temperature scanning tunneling microscopy (STM) and spectroscopy (STS) studies on the electronic properties of (root 3 x root 3)R30 degrees phase of silicene on Ag(111) surface. We found the existence of Dirac Fermion chirality through the observation of -1.5 and -1.0 power law decay of quasiparticle interference (QPI) patterns. Moreover, in contrast to the trigonal warping of Dirac cone in graphene, we found that the Dirac cone of silicene is hexagonally warped, which is further confirmed by density functional calculations and explained by the unique superstructure of silicene. Our results demonstrate that the (root 3 x root 3)R30 degrees phase is an ideal system to investigate the unique Dirac Fermion properties of silicene. |
| 资助信息 | MOST of China [2012CB921703, 2013CB921702, 2013CBA01600, 2011CBA00100]; NSF of China [11174344, 91121003, 11074289, 11174337, 11225418] |
| 语种 | 英语 |
| 公开日期 | 2014-01-16 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/57275]  |
| 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 | Feng, BJ,Li, H,Liu, CC,et al. Observation of Dirac Cone Warping and Chirality Effects in Silicene[J]. ACS NANO,2013,7(10):9049. |
| APA | Feng, BJ.,Li, H.,Liu, CC.,Shao, TN.,Cheng, P.,...&Wu, KH.(2013).Observation of Dirac Cone Warping and Chirality Effects in Silicene.ACS NANO,7(10),9049. |
| MLA | Feng, BJ,et al."Observation of Dirac Cone Warping and Chirality Effects in Silicene".ACS NANO 7.10(2013):9049. |
入库方式： OAI收割
来源：物理研究所
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