Bias-dependent oscillatory electron transport of monatomic sulfur chains

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	Bias-dependent oscillatory electron transport of monatomic sulfur chains
	J. X. Yu; Y. Cheng; S. Sanvito; X. R. Chen
	2012
Source Publication	Applied Physics Letters
ISSN	0003-6951
Volume	100 Issue:10
Abstract	The bias-dependent oscillatory electron transport of monatomic sulfur chains sandwiched between gold electrodes is investigated with density functional theory and non-equilibrium Green's function method. At zero bias, in contrast to the typical odd-even oscillations observed in most metallic chains, we find that the conductance oscillates with a period of four atoms. However, as the bias voltage is increased the current displays a two-atom periodicity. This emerges gradually, first for the longer chains and then, at voltages larger than 0.7 V, for lengths. The oscillatory behaviors are analyzed by the density of states and the energy-dependent and bias-dependent transmission coefficients. (C) 2012 American Institute of Physics. [http://dx.doi.org/10.1063/1.3693380]
description.department	[yu, jing-xin; cheng, yan; chen, xiang-rong] sichuan univ, coll phys sci & technol, chengdu 610064, peoples r china. [sanvito, stefano] trinity coll dublin, sch phys, dublin 2, ireland. [sanvito, stefano] trinity coll dublin, crann, dublin 2, ireland. [chen, xiang-rong] chinese acad sci, int ctr mat phys, shenyang 110016, peoples r china.;cheng, y (reprint author), sichuan univ, coll phys sci & technol, chengdu 610064, peoples r china.;ycheng@scu.edu.cn; sanvitos@tcd.ie; x.r.chen@qq.com
Keyword	Atomic Wires Quantized Conductance Gold Atoms Resistance Nanowires Contacts
URL	查看原文
Document Type	期刊论文
Identifier	http://ir.imr.ac.cn/handle/321006/60421
Collection	中国科学院金属研究所
Recommended Citation GB/T 7714	J. X. Yu,Y. Cheng,S. Sanvito,et al. Bias-dependent oscillatory electron transport of monatomic sulfur chains[J]. Applied Physics Letters,2012,100(10).
APA	J. X. Yu,Y. Cheng,S. Sanvito,&X. R. Chen.(2012).Bias-dependent oscillatory electron transport of monatomic sulfur chains.Applied Physics Letters,100(10).
MLA	J. X. Yu,et al."Bias-dependent oscillatory electron transport of monatomic sulfur chains".Applied Physics Letters 100.10(2012).

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