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Bias-dependent conductance of Si-2 cluster
F. T. Liu; Y. Cheng; F. B. Yang; X. R. Chen
2013
Source PublicationChemical Physics Letters
ISSN0009-2614
Volume590Pages:160-164
AbstractConductance of Si-2 cluster sandwiched between Au electrodes is investigated by the density functional theory combined with the non-equilibrium Green's function method. We simulate the Au-Si-2-Au junctions breaking process, calculate the corresponding cohesion energy in four different anchoring geometries, and obtain the equilibrium conductance and the projected density of states of junctions in optimal position, and find that all junctions have large conductance. In addition, we calculate the relationship of conductance with external bias voltage, and find that the conductance of hollow-hollow configuration is more stable than other three configurations when the applied bias voltage increases. The calculated results proved that the distance, coupling morphology of Si-2 cluster connected with electrodes and external bias voltage have an important effect on the conductance of nanoscale junctions. (C) 2013 Elsevier B. V. All rights reserved.
description.department[liu, fu-ti ; cheng, yan ; yang, fu-bin ; chen, xiang-rong] sichuan univ, coll phys sci & technol, minist educ, key lab high energy dens phys & technol, chengdu 610064, peoples r china. [liu, fu-ti] yibin univ, coll phys & elect engn, yibin 644000, peoples r china. [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, minist educ, key lab high energy dens phys & technol, chengdu 610064, peoples r china. ; ycheng@scu.edu.cn
KeywordSilicon Matrix Energy Size
URL查看原文
Language英语
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/72329
Collection中国科学院金属研究所
Recommended Citation
GB/T 7714
F. T. Liu,Y. Cheng,F. B. Yang,et al. Bias-dependent conductance of Si-2 cluster[J]. Chemical Physics Letters,2013,590:160-164.
APA F. T. Liu,Y. Cheng,F. B. Yang,&X. R. Chen.(2013).Bias-dependent conductance of Si-2 cluster.Chemical Physics Letters,590,160-164.
MLA F. T. Liu,et al."Bias-dependent conductance of Si-2 cluster".Chemical Physics Letters 590(2013):160-164.
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