| Scanning tunneling microscopy image modeling for zigzag-edge graphene nanoribbons | |
| X. W. Chen; H. Q. Wan; K. H. Song; D. S. Tang; G. H. Zhou | |
| 2011 | |
| 发表期刊 | Applied Physics Letters
 |
| ISSN | 0003-6951 |
| 卷号 | 98期号:26 |
| 摘要 | Based on the nonequilibrium Green's function with tight-binding approximation scheme, we study the scanning tunneling microscopy (STM) current from a semi-infinite quantum wire to carbon sites of a zigzag-edge graphene nanoribbon (ZGNR) via an adatom on it. We find that although the existence of local edge states, only the even order number carbon chains near the edge provide good conducting channels, and the STM image should be alternative with dark-bright fringes. This effect has not been shown in previous studies by treating a ZGNR in its entirety, and it may be useful for the STM experimental characterization on graphene samples. (C) 2011 American Institute of Physics. [doi:10.1063/1.3600788] |
| 部门归属 | [chen, xiongwen; wan, haiqing; tang, dongsheng; zhou, guanghui] hunan normal univ, minist educ, dept phys & key lab low dimens quantum struct & m, changsha 410081, hunan, peoples r china. [chen, xiongwen; song, kehui] huaihua univ, dept phys & elect informat sci, huaihua 418008, peoples r china. [zhou, guanghui] chinese acad sci, int ctr mat phys, shenyang 110015, peoples r china.;chen, xw (reprint author), hunan normal univ, minist educ, dept phys & key lab low dimens quantum struct & m, changsha 410081, hunan, peoples r china;ghzhou@hunnu.edu.cn |
| 关键词 | Massless Dirac Fermions Quantum Transport |
| URL | 查看原文 |
| WOS记录号 | WOS:000292335700054 |
| 引用统计 | |
| 文献类型 | 期刊论文 |
| 条目标识符 | http://ir.imr.ac.cn/handle/321006/30270 |
| 专题 | 中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | X. W. Chen,H. Q. Wan,K. H. Song,et al. Scanning tunneling microscopy image modeling for zigzag-edge graphene nanoribbons[J]. Applied Physics Letters,2011,98(26). |
| APA | X. W. Chen,H. Q. Wan,K. H. Song,D. S. Tang,&G. H. Zhou.(2011).Scanning tunneling microscopy image modeling for zigzag-edge graphene nanoribbons.Applied Physics Letters,98(26). |
| MLA | X. W. Chen,et al."Scanning tunneling microscopy image modeling for zigzag-edge graphene nanoribbons".Applied Physics Letters 98.26(2011). |
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