ITP OpenIR  > 理论物理所2011年知识产出
Electric current focusing efficiency in a graphene electric lens
Mu, WH; Zhang, G; Tang, YQ; Wang, W; Ou-Yang, ZC; Mu, WH (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
2011
发表期刊JOURNAL OF PHYSICS-CONDENSED MATTER
ISSN0953-8984
卷号23期号:49页码:495302
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.
部门归属[Mu, Weihua; Ou-Yang, Zhongcan] Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China; [Mu, Weihua; Ou-Yang, Zhongcan] Kavli Inst Theoret Phys China, Beijing 100190, Peoples R China; [Zhang, Gang] Peking Univ, Key Lab Phys & Chem Nanodevices, Beijing 100871, Peoples R China; [Zhang, Gang] Peking Univ, Dept Elect, Beijing 100871, Peoples R China; [Tang, Yunqing] Chongqing Univ, Dept Phys, Chongqing 400044, Peoples R China; [Wang, Wei] SUNY Albany, CNSE, Albany, NY 12203 USA; [Ou-Yang, Zhongcan] Tsinghua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
关键词P-n-junctions Bilayer Graphene Berrys Phase Electrodynamics Carbon
学科领域Physics
资助者National Science Foundation of China (NSFC) [11074259, 91027045] ; National Science Foundation of China (NSFC) [11074259, 91027045] ; National Science Foundation of China (NSFC) [11074259, 91027045] ; National Science Foundation of China (NSFC) [11074259, 91027045]
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收录类别SCI
语种英语
资助者National Science Foundation of China (NSFC) [11074259, 91027045] ; National Science Foundation of China (NSFC) [11074259, 91027045] ; National Science Foundation of China (NSFC) [11074259, 91027045] ; National Science Foundation of China (NSFC) [11074259, 91027045]
WOS记录号WOS:000298142200004
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被引频次:1[WOS]   [WOS记录]     [WOS相关记录]
文献类型期刊论文
条目标识符http://ir.itp.ac.cn/handle/311006/14208
专题理论物理所2011年知识产出
通讯作者Mu, WH (reprint author), Chinese Acad Sci, State Key Lab Theoret Phys, Inst Theoret Phys, Beijing 100190, Peoples R China.
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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):495302.
APA Mu, WH,Zhang, G,Tang, YQ,Wang, W,Ou-Yang, ZC,&Mu, WH .(2011).Electric current focusing efficiency in a graphene electric lens.JOURNAL OF PHYSICS-CONDENSED MATTER,23(49),495302.
MLA Mu, WH,et al."Electric current focusing efficiency in a graphene electric lens".JOURNAL OF PHYSICS-CONDENSED MATTER 23.49(2011):495302.
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