Anomalous Josephson effect in semiconducting nanowires as a signature of the topologically nontrivial phase
Konstantin N. Nesterov, Manuel Houzet, Julia S. Meyer
DOI 10.1103/PhysRevB.93.174502 · Physical Review B
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Abstract
We study Josephson junctions made of semiconducting nanowires with Rashba spin-orbit coupling, where superconducting correlations are induced by the proximity effect. In the presence of a suitably directed magnetic field, the system displays the anomalous Josephson effect: a nonzero supercurrent in the absence of a phase bias between two superconductors. We show that this anomalous current can be increased significantly by tuning the nanowire into the helical regime. In particular, in a short junction, a large anomalous current is a signature for topologically nontrivial superconductivity in the nanowire.
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| Formula | Reported Tc (K) | Pressure (GPa) | Type |
|---|---|---|---|
| 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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