AC Conductance Through a Vibrating Molecular Dot in Kondo Regime

作     者：Hyun-Chul Yong 

作者机构：School of PhysicsPeking UniversityBeijing 100871China 

出 版 物：《Communications in Theoretical Physics》 (理论物理通讯（英文版）)

年 卷 期：2007年第48卷第12期

页      面：1107-1114页

核心收录：

学科分类：080901[工学-物理电子学] 0809[工学-电子科学与技术（可授工学、理学学位）] 08[工学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：国家自然科学基金 北京市科技新星计划项目 国家重大科学研究计划 

主　　题：quantum dot Kondo effect electron-phonon interaction AC conductance 

摘      要：In the present paper,by applying the Lang-Firsov canonical transformation and the so-called non-crossingapproximation technique,we investigate the joint effects of the electron-phonon interaction and an external alternatinggate voltage on the transport of a quantum dot system in the Kondo regime.We find that,while the satellite Kondoresonant peaks appear in both the averaged local density of states and the differential conductance,the main Kondopeak at the Fermi energy is greatly suppressed.These results confirm the previous ones derived by other methods,suchas the equation of motion solution.Furthermore,based on the picture of virtual transition between quasi-eigenstates inthe system,we also give a slightly different explanation on these phenomena.