具有诱导超导电性和自旋轨道耦合作用的半导体纳米线零偏压电导峰的研究

本文对具有诱导超导电性和自旋轨道耦合作用的半导体纳米线的微分电导谱的一些特性进行了详细的分析和研究. 通过对系统的微分电导谱与系统的各种可调控参量之间的关系进行详细的研究，发现在这类系统中存在两种不同类型的零偏压电导峰. 这两种零偏压电导峰具有不同的特点，相应地应由不同的物理机制所导致. 论文中的计算结果对澄清最近一些有争议性的理论问题有一定的理论参考意义.

A Study of Zero Bias Conductance Peak in Spin-Orbit Coupled Semiconductor Nanowires with Induced Superconduc ting Pair Potential

Based on the same theoretical model as proposed in some previous theoretical works but by more detailed theoretical calculations, we study charge transport through semiconductor nanowire with the interplay of Rashba spin-orbit coupling and induced superconducting pair potential. We show that two different types of zero-bias conductance peaks may exist for the theoretical model proposed in these theoretical works. One type of ZBCPs may occur when the Zeeman splitting exceeds the critical value and the semiconductor nanowire is in a topologically nontrivial superconducting phase, as was predicted in these some theoretical works. Another type of ZBCPs may also occur when the Zeeman splitting is smaller than the critical value and the semiconductor is in a topologically trivial superconducting phase. The two types of ZBCPs have some different characteristics and should be due to different mechanisms. The results obtained in the present paper may be useful for clarifying some controversial issues concerning the theoretical interpretation of some recent experimental results.