Can electric field induced energy gaps in metallic carbon nanotubes?

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	Can electric field induced energy gaps in metallic carbon nanotubes?
	Zhou, X; Chen, H; Zhong-can, OY; Zhou, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
刊名	JOURNAL OF PHYSICS-CONDENSED MATTER
	2001
卷号	13 期号:27 页码:L635-L640
关键词	Quantum Wires Manipulation Transport Junctions
ISSN号	0953-8984
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.
学科主题	Physics
URL标识	查看原文
WOS记录号	WOS:000170075700004
公开日期	2012-08-29
内容类型	期刊论文
源URL	[http://ir.itp.ac.cn/handle/311006/12708]
专题	理论物理研究所_理论物理所1978-2010年知识产出
通讯作者	Zhou, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China.
推荐引用方式 GB/T 7714	Zhou, X,Chen, H,Zhong-can, OY,et al. Can electric field induced energy gaps in metallic carbon nanotubes?[J]. JOURNAL OF PHYSICS-CONDENSED MATTER,2001,13(27):L635-L640.
APA	Zhou, X,Chen, H,Zhong-can, OY,&Zhou, X , Chinese Acad Sci, Inst Theoret Phys, POB 2735, Beijing 100080, Peoples R China..(2001).Can electric field induced energy gaps in metallic carbon nanotubes?.JOURNAL OF PHYSICS-CONDENSED MATTER,13(27),L635-L640.
MLA	Zhou, X,et al."Can electric field induced energy gaps in metallic carbon nanotubes?".JOURNAL OF PHYSICS-CONDENSED MATTER 13.27(2001):L635-L640.