Interaction effects on proximity-induced superconductivity in semiconducting nanowires
arXiv:1412.4543 · doi:10.1103/PhysRevB.91.165425
Abstract
We investigate the effect of electron-electron interactions on proximity-induced -wave superconductivity in one-dimensional nanowires. We treat the interactions on a self-consistent mean-field level, and find an analytic expression for the effective pairing potential in the presence of interactions, valid for a weakly tunnel coupled wire. We show that for a set of two nanowires placed in parallel on a superconducting substrate, the interaction-induced reduction of the pairing energy could result in the effective interwire pairing potential exceeding the intrawire potential, which is one of the requirements for creating a time-reversal symmetric topological superconducting state in such a two-wire system.
7 pages, 1 figure
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