Electrostatic effects and topological superconductivity in semiconductor-superconductor-magnetic insulator hybrid wires
arXiv:2011.01933 · doi:10.1103/PhysRevB.104.195433
Abstract
We investigate the impact of electrostatics on the proximity effect between a magnetic insulator and a semiconductor wire in semiconductor-superconductor-magnetic insulator hybrid structures. By performing self-consistent Schrdinger-Poisson calculations using an effective model of the hybrid system, we find that large effective Zeeman fields consistent with the emergence of topological superconductivity emerge within a large parameter window in wires with overlapping layers of magnetic insulator and superconductor, but not in non-overlapping structures. We show that this behavior is essentially the result of electrostatic effects determining the amplitude of the low-energy wave functions near the semiconductor-magnetic insulator interface.
arXiv comment8 pages, 5 figures
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