Topological superconductivity in Rashba semiconductors without a Zeeman field
Panagiotis Kotetes
DOI 10.1103/PhysRevB.92.014514 · Physical Review B
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Abstract
In this manuscript, I present new hybrid devices based on multiwire/channel Rashba semiconductors, which harbor Majorana fermions (MFs) without a Zeeman field. In contrast, magnetic fluxes, supercurrents, or electric fields can be employed, yielding an enhanced device manipulability. The generic topological phase diagram for two-nanowire/channel systems exhibits features of quantum criticality and a rich interplay of phases with 0, 1, or 2 MFs per edge. The most prominent and experimentally feasible implementation relies on the already existing platforms of InAs two-dimensional electron gas (2DEG) on top of a Josephson junction. Appropriate design of the latter device allows phases with 1 or 2 MFs, both detectable in zero-bias anomaly peaks with a single or double unit of conductance.
Source-reported materials — not catalogue approval
| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| InAs Archive — visibility unverified Source-occurrence policy only; no material identity or catalogue acceptance is inferred from the formula. | — | Pressure not reported | unknown |
| InSb 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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