By comparing the properties of the linear conductance in the two systems, the information of the MBSs formed at the two ends of a topological superconductor nanowire then can be inferred. By varying the coupling strength between the dots and the electron reservoirs, the conductance in the two structures changes in different ways. We find that the zero-energy conductance develops a sharp peak when the dots are connected by the MBSs, whereas that in the case of the dots are coupled via regular fermions shows a valley. Here we study in theory the quantum interference effect in parallel-coupled double quantum dots which are connected either by Majorana bound states (MBSs) or regular fermions. Non-invasive detection of the Majorana bound state (MBSs), a kind of quasiparticle without charge and mass, is one of the core issues in current condensed matter physics.
4Guilin Key Laboratory of Microelectronic Electrode Materials and Biological Nanomaterials and National Special Mineral Materials Engineering Technology Research Center and Guangxi Key Laboratory of Superhard Materials, China Monferrous Metal (Guilin) Geology and Mining Co., Ltd, Guilin, China.3School of Materials Science and Engineering and Guangxi Key Laboratory of Information Materials, Guilin University of Electronic Technology, Guilin, China.2Institute of Applied Physics and Computational Mathematics, Beijing, China.1School of Electronic and Information Engineering, Zhongshan Institute, University of Electronic Science and Technology of China, Zhongshan, China.Feng Chi 1*, Jing Wang 1, Tian-Yu He 1, Zhen-Guo Fu 2*, Ping Zhang 2, Xiao-Wen Zhang 3, Lihui Wang 4 and Zongliu Lu 4
0 kommentar(er)
