论文标题
Majorana将状态泄漏到Su-Schrieffer-Heeger-rashba场景中的杂质
Majorana Bound State leakage to impurity in Su-Schrieffer-Heeger-Rashba scenario
论文作者
论文摘要
在根据Su-Schrieffer-Heeger（SSH）场景二次二聚并二聚体的情况下，我们显示了Majorana绑定状态泄漏的异常特征，并且系统末端之一存在杂质。我们发现两个拓扑分支：通常，与Rashba纳米线的土著和二聚体，由于纳米线的SSH二聚体存在，具有不同的自旋极化的不对称性，可以通过与循环过渡的频段相反的顺序解释。此外，由于Andreev结束的状态的出现，该系统是否在拓扑阶段中表现出不同的行为，因此对二聚体纳米线的杂质会影响Majoraana绑定状态泄漏到微不足道的杂质中。这导致将零能状态固定到杂质位点，以获得某些范围的参数。
We show anomalous features of Majorana Bound State leakage in the situation where topological Rashba nanowire is dimerized according to the Su-Schrieffer-Heeger (SSH) scenario and an impurity is present at one of the ends of the system. We find that two topological branches: usual, indigenous to Rashba nanowire and dimerized one, existing as a result of SSH dimerization of nanowire, have different asymmetry of spin polarization that can be explained by opposite order of bands taking part in topological transitions. Additionally, introduction of an impurity to the dimerized nanowire influences the leakage of Majorana bound states into the trivial impurity, due to the emergence of Andreev bound states that behave differently whether the system is or is not in topological phase. This results in the pinning of zero energy states to the impurity site for some range of parameters.
