论文标题
Mnbi2Te4-Supercoductor杂型结构的静电效应
Electrostatic effects of the MnBi2Te4-superconductor hetero-structures in chiral Majorana search
论文作者
论文摘要
手性主要模式的实现是一项艰巨的任务。我们旨在理解手性Majoraana搜索中使用的实际设备的相图和参数控制功能。除了众所周知的最小模型之外，我们还使用一种自一致的Schrodinger-Poisson方法来开发数值模拟方案，以研究为例，MNBI2TE4薄膜耦合到S-WAVE超导体。我们表明，拓扑表面状态的超导接近效应和化学电位的可调性都受到栅极诱导的静电电位的显着影响。这使实验中的实现复杂化，实际拓扑区域将与先前最小模型中预测的相反的形成鲜明对比。然而，我们证明了手性majorana模式仍然存在于具有实际可调性的广泛实验参数中。
The realization of chiral Majorana modes is a challenging task. We aim to comprehend the phase diagrams and parameter control capabilities of the actual devices used in the chiral Majorana search. Beyond the well-known minimal models, we develop a numerical simulation scheme using a self-consistent Schrodinger-Poisson approach to study, as an example, the MnBi2Te4 thin film coupled to an s-wave superconductor. We show that both the superconducting proximity effect and the tunability of the chemical potential for the topological surface states are significantly influenced by the gate-induced electrostatic potential. This complicates the implementation in experiments, and the actual topological region will be narrowed in stark contrast to those predicted in the previous minimal models. Nevertheless, we demonstrate that the chiral Majorana mode still exists in a wide range of experimental parameters with practical tunability.
