Electrostatic effects and topological superconductivity in semiconductor–superconductor–magnetic-insulator hybrid wires
Benjamin D. Woods, Tudor D. Stanescu
DOI 10.1103/PhysRevB.104.195433 · Physical Review B
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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 Schrödinger-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 nonoverlapping structures. We show that this behavior is essentially the result of electrostatic effects controlling the amplitude of the low-energy wave functions near the semiconductor–magnetic-insulator interface.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| Al Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
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