Aharonov-Bohm Interferometer in a T-Shaped Quantum Dot Embedded in Majorana Bound States

作     者：羊富彬 Fu-Bin Yang

作者机构：Department of Physics and Atmospheric Lidar Institute Civil Aviation Flight University of China 

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

年 卷 期：2019年第71卷第8期

页      面：1024-1028页

核心收录：

学科分类：08[工学] 0704[理学-天文学] 0702[理学-物理学] 

基　　金：Supported by the National Natural Science Foundation of China under Grant No.11547203 the Science Foundation of Civil Aviation Flight University of China under Grant Nos.J2015-35 and JG2019-19 

主　　题：Aharonov-Bohm effect Majorana bound states quantum dot 

摘      要：We theoretically study the spin-dependent transport properties of an Aharonov-Bohm(AB) interferometer composed by a T-shaped quantum dot(QD) embedded in Majorana bound states(MBS).We use the equation of motion method to calculate the conductance across the interferometer.We note that the conductance exhibits sensitive dependence on the MBS-QD coupling strength as well as the polarization strength of the leads when the phase factor of AB ring changes periodically.The conductance shows a transition from resonance to anti-resonance when the MBSQD coupling strength changes from small to large.Also, there is different p-dependence conductance when the leads alignment changes from parallel to anti-parallel.These findings suggest that such a model could be used for a sensitive detection of MBS interactions, exploiting the high sensitivity of conductance to the AB phase in the interferometer.