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题名: Can electric field induced energy gaps in metallic carbon nanotubes?
作者: Zhou, X ;  Chen, H ;  Zhong-can, OY
刊名: JOURNAL OF PHYSICS-CONDENSED MATTER
出版日期: 2001
卷号: 13, 期号:27, 页码:L635-L640
关键词: QUANTUM WIRES ;  MANIPULATION ;  TRANSPORT ;  JUNCTIONS
学科分类: Physics
通讯作者: Zhou, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
部门归属: Chinese Acad Sci, Inst Theoret Phys, Beijing 100080, Peoples R China; Tsing Hua Univ, Ctr Adv Study, Beijing 100084, Peoples R China
英文摘要: The low-energy electronic structure of a metallic single-walled carbon nanotube (SWNT) in an external electric field perpendicular to the tube axis is investigated. Based on tight-binding approximation, a field-induced energy gap is found in all (n, n) SWNTs, and the gap shows strong dependence on the electric field and the size of the tubes. We numerically find a universal scaling that the gap is a function of the electric field and the radius of SWNTs, and the results are testified by the second-order perturbation theory in weak field limit. Our calculation shows the field required to induce a 0.1 eV gap in metallic SWNTs can be easily reached under the current experimental conditions. It indicates the possibility of applying nanotubes to electric signal-controlled nanoscale switching: devices.
收录类别: SCI
原文出处: 查看原文
WOS记录号: WOS:000170075700004
Citation statistics: 
内容类型: 期刊论文
URI标识: http://ir.itp.ac.cn/handle/311006/12708
Appears in Collections:理论物理所1978-2010年知识产出_期刊论文

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Recommended Citation:
Zhou, X,Chen, H,Zhong-can, OY. Can electric field induced energy gaps in metallic carbon nanotubes?[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2001,13(27):L635-L640.
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