The Role of the Electrode Size of to the Elecronic Transport Properties

摘要：

　　We study the size effects of the electrode to the elecronic transport properties via a molecule of benzene sandwiched between two graphene electrodes using an ab initio nonequilibrium Greens function method and density function theory.More specially, two types of electrodes are selected: one ring wide electrodes and two rings wide electrodes.We find that the current cross the system that is with two rings wide electrodes is bigger than the current that is with one ring wide electrodes.Detailed analyses of the projected density of states and the transmission spectra of the system reveals the mechanism: with wider electrodes, transmission coeffients walk nearer to the fermi energy and may make contribution to the current at applied bias voltages.

关键词： Electrode wide Projected density of states Density function theory

作者: You-lin Peng Yan-hong Zhou Xiaohui Qiu Lili Zhou

作者单位: Department of Information Engineering,Gannan Medical University,Ganzhou,Jiangxi 341000,China

会议类型: 国际会议

会议名称: 2012 China Functional Materials Technology and Industry Forum(2012中国功能材料科技与产业高层论坛)(CFMTIF2012)

会议地点: 昆明

会议语种:英文

页码: 88-91

在线出版日期: 2012-11-09（万方平台首次上网日期，不代表论文的发表时间）