Conductance Spectra in Graphene-Superconductor Junctions  

作　　者：田杰 周世平 邓振炎 

机构地区：[1]Department of Physics, Shanghai University

出　　处：《Communications in Theoretical Physics》2015年第1期109-114,共6页理论物理通讯（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant No.61271163

摘　　要：The conductance spectra of a graphene ribbon and graphene-superconductor （G-S） junctions are investi- gated, using the tight-binding model and non-equilibrium Green＇s function formalism. It is found that the quantized conductance related to graphene＇s edge-states is robust against perturbations in the model parameters for a graphene monolayer ribbon with the zigzag boundary. With appropriate a new bound state with odd-frequency symmetry is found in conductance amplitude is followed model parameter of the spin-orbit interaction strength, the G-S junction. An enhancement in the zero-energy

关 键 词：GRAPHENE SUPERCONDUCTOR edge-state conductance spectrum 

分 类 号：O469[理学—凝聚态物理]