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	Single electron emission from the closed-tips of single-walled carbon nanotubes
	Zhou, G ; Duan, WH ; Gu, BL
	2010-05-06 ; 2010-05-06
关键词	FIELD-EMISSION NANOWIRE ARRAYS EMITTERS Physics, Atomic, Molecular & Chemical
中文摘要	The single electron emission behaviors and characteristics from the well-defined quantized energy levels, corresponding to localized electronic states at the dome-structure tips, in single-walled carbon nanotubes (SWNTs) are investigated and illuminated by use of the energy level emission model in combination with the first-principles calculations on the electronic structures. Under the external electric field, the confined electrons are emitted simultaneously from each quantized energy level by virtue of the resonant tunneling effects. With increasing applied voltage, the emission current increases monotonically and exponentially up to the first peak value, and then steps into the increasing and decreasing "sawtoothlike" variations in sequence. The negative differential resistance or conductivity and the maximum current for SWNTs are simulated. The influences of localized electronic states and curvatures of the different closed tips on the single electron emission behaviors of SWNTs are evaluated and discussed. Also a few issues and applications relevant to electron emission of carbon nanotubes are addressed. (C) 2004 American Institute of Physics.
语种	英语 ; 英语
出版者	AMER INST PHYSICS ; MELVILLE ; CIRCULATION & FULFILLMENT DIV, 2 HUNTINGTON QUADRANGLE, STE 1 N O 1, MELVILLE, NY 11747-4501 USA
内容类型	期刊论文
源URL	[http://hdl.handle.net/123456789/15237]
专题	清华大学
推荐引用方式 GB/T 7714	Zhou, G,Duan, WH,Gu, BL. Single electron emission from the closed-tips of single-walled carbon nanotubes[J],2010, 2010.
APA	Zhou, G,Duan, WH,&Gu, BL.(2010).Single electron emission from the closed-tips of single-walled carbon nanotubes..
MLA	Zhou, G,et al."Single electron emission from the closed-tips of single-walled carbon nanotubes".(2010).

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