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
发表期刊	Applied Physics Letters
ISSN	0003-6951
卷号	100 期号:10
摘要	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]
部门归属	[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
关键词	Atomic Wires Quantized Conductance Gold Atoms Resistance Nanowires Contacts
URL	查看原文
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/60421
专题	中国科学院金属研究所
推荐引用方式 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).