Electrostatic effects of MnBi2Te4 -superconductor heterostructures in the chiral Majorana search

Abstract

The realization of chiral Majorana modes is a significant and challenging task. The authors develop a self-consistent Schr\"odinger-Poisson method to study the electrostatic effect induced by the gate control. The electrostatic environment imposes constraints on both induced superconductivity and the tunability of the surface states, and therefore significantly influences the topological region compared to previous work. Their results provide a deep understanding of the real phase diagrams and parameter tunability of superconductor--quantum anomalous Hall insulator devices for the chiral Majorana search.