纳米分子器件量子传导中的Green's Function模型

Green' s Function for quantum transmission through nano molecular devices

将纳米分子器件的电极和分子本体作为一个系统,考虑到入射电子在原子电极和分子本体中的传导,在电极与分子之间界面上的透射的量子状态,在满足Fisher-Lee关系式的基础上,一个新型的Green’sFunction被设计出来。这一理论模型把三个区域上的不同量子状态完整地表达在一个方程式里,符合物理学基本原理,可以系统地用来研究纳米分子器件的量子传导特性。

Nano molecular devices with two electrodes and a molecular body are assumed as a system, after considering the incident electron transport through the electrodes and the molecular body, transmit through the interfaces between the electrodes and molecule. A novel Green' s Function has been presented based on the Fisher - Lee formula. This theoretical model which describes the quantum states in three regions of the two - terminal molecular device in one equation agrees well with the general physical approach. It can be used to research the quantum transmission property of the nano molecular devices.