计算物理 ›› 2010, Vol. 27 ›› Issue (4): 619-623.

• 研究论文 • 上一篇    下一篇

电极构型及其耦合模式对有机分子电输运性质的影响

刘瑞金   

  1. 山东理工大学 理学院, 山东 淄博 255049
  • 收稿日期:2009-04-02 修回日期:2009-08-20 出版日期:2010-07-25 发布日期:2010-07-25
  • 作者简介:刘瑞金(1963-),男,山东淄博,副教授,硕士,从事分子电子学的理论研究,山东淄博山东理工大学理学院255049.

Electrode Configurations and Coupling Modes in Organic Molecular Electronic Transport

LIU Ruijin   

  1. School of Science, Shandong University of Technology, Zibo 255049, China
  • Received:2009-04-02 Revised:2009-08-20 Online:2010-07-25 Published:2010-07-25

摘要: 选取两种不同的电极构型及其耦合模式,利用从头算理论和弹性散射格林函数的方法,对有机分子对苯二甲氰的电输运性质进行理论研究和对比分析.计算结果表明,不同构型及其耦合在分子的耦合属性、电子输运谱、开启电压位置、电导平台的分布以及电流的响应等方面存在明显不同,改变电极间距也会对各种构型分子体系的耦合系数、电导平台高度和电流的大小产生影响.

关键词: 电极构型, 耦合, 电输运, 电导, 电流

Abstract: With ab initio theory and elastic scattering Green's function method,electronic transport of organic molecule 1,4-phenylene diisocyanide is investigated with two electrode configurations and coupling modes.Coupling properties,electronic transport spectrums,positions of turning-on voltage,distributions of conductance platform,and responses of current with different configurations and couplings are studied.Coupling coefficients,height of conductance platform and current can be affected by changing the distance between two electrodes.

Key words: electrode configuration, coupling, electronic transport, conductance, current

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