Electric current focusing efficiency in a graphene electric lens
文献类型：期刊论文
| 作者 | Mu, WH ; Zhang, G ; Tang, YQ ; Wang, W ; Ou-Yang, ZC |
| 刊名 | JOURNAL OF PHYSICS-CONDENSED MATTER
 |
| 出版日期 | 2011 |
| 卷号 | 23期号:49 |
| 关键词 | P-N-JUNCTIONS BILAYER GRAPHENE BERRYS PHASE ELECTRODYNAMICS CARBON |
| ISSN号 | 0953-8984 |
| 通讯作者 | Mu, WH: Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China. |
| 中文摘要 | In the present work, we study theoretically the electron wave's focusing phenomenon in a single-layered graphene pn junction (PNJ) and obtain the electric current density distribution of graphene PNJ, which is in good agreement with the qualitative result in previous numerical calculations (Cheianov et al 2007 Science, 315, 1252). In addition, we find that, for a symmetric PNJ, 1/4 of total electric current radiated from the source electrode can be collected by the drain electrode. Furthermore, this ratio reduces to 3/16 in a symmetric graphene npn junction. Our results obtained by the present analytical method provide a general design rule for an electric lens based on negative refractory index systems. |
| 收录类别 | SCI |
| 资助信息 | National Science Foundation of China (NSFC) [11074259, 91027045] |
| 语种 | 英语 |
| 公开日期 | 2013-09-17 |
| 源URL | [http://ir.iphy.ac.cn/handle/311004/36898]  |
| 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 | Mu, WH,Zhang, G,Tang, YQ,et al. Electric current focusing efficiency in a graphene electric lens[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2011,23(49). |
| APA | Mu, WH,Zhang, G,Tang, YQ,Wang, W,&Ou-Yang, ZC.(2011).Electric current focusing efficiency in a graphene electric lens.JOURNAL OF PHYSICS-CONDENSED MATTER,23(49). |
| MLA | Mu, WH,et al."Electric current focusing efficiency in a graphene electric lens".JOURNAL OF PHYSICS-CONDENSED MATTER 23.49(2011). |
入库方式： OAI收割
来源：物理研究所
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