Time-dependent transport in low-dimensional-systems - A numerical   solution using the nonequilibrium Green&apos;s functions

doi:10.1109/TNANO.2006.886780

CORC > 北京大学 > 信息科学技术学院

	Time-dependent transport in low-dimensional-systems - A numerical solution using the nonequilibrium Green's functions
	He, Yuhui ; Hou, Danqiong ; Liu, Xiaoyan ; Han, Ruqi ; Chen, Jie
刊名	ieee 纳米技术汇刊
	2007
关键词	AC transport properties of nanodevices nonequilibrium Green&apos transient CARBON NANOTUBE INTERCONNECTS s function
DOI	10.1109/TNANO.2006.886780
英文摘要	In this paper, we present a novel numerical solution to analyze time-dependent transport in low-dimensional systems, such as one-dimensional (1-D) quantum dot and quasi-one-dimensional (Q1D) carbon nanotube systems, by using the nonequilibrium Green's functions (NEGF). The novelty of proposed approach is to jointly handle the NEGF in both the time-domain and the real-space-domain in a recursive fashion. The time-domain recursive approach is a straightforward approach to solve time-dependent transport problems, while the real-space recursive approach makes the calculations feasible for arbitrary-length 1-D and Q1D systems. To verify our proposed algorithm, we apply this method to explore the transient and ac transport properties of a sample 1-D quantum-dot array system. We will present in this paper the simulated electrical current curves, J (t), in response to various pulses and sinusoid waveforms. From these simulation results, we can obtain the delay and distortion information. We will then discuss how the length of a quantum-dot array and the hopping energy affect the transport behavior. The knowledge we gain from this project will help researchers to evaluate the electrical properties of 1-D and Q1D materials. The knowledge can also benefit the making of time-dependent 1-D and Q1D nanoelectronic devices.; http://gateway.webofknowledge.com/gateway/Gateway.cgi?GWVersion=2&SrcApp=PARTNER_APP&SrcAuth=LinksAMR&KeyUT=WOS:000243917700010&DestLinkType=FullRecord&DestApp=ALL_WOS&UsrCustomerID=8e1609b174ce4e31116a60747a720701 ; Engineering, Electrical & Electronic; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; SCI(E); EI; 5; ARTICLE; 1; 56-62; 6
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/152974]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	He, Yuhui,Hou, Danqiong,Liu, Xiaoyan,et al. Time-dependent transport in low-dimensional-systems - A numerical solution using the nonequilibrium Green's functions[J]. ieee 纳米技术汇刊,2007.
APA	He, Yuhui,Hou, Danqiong,Liu, Xiaoyan,Han, Ruqi,&Chen, Jie.(2007).Time-dependent transport in low-dimensional-systems - A numerical solution using the nonequilibrium Green's functions.ieee 纳米技术汇刊.
MLA	He, Yuhui,et al."Time-dependent transport in low-dimensional-systems - A numerical solution using the nonequilibrium Green's functions".ieee 纳米技术汇刊 (2007).