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arXiv · 2105.06193

Electron correlation effects in superconducting nanowires in and out of equilibrium

Riku Tuovinen
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Abstract

One-dimensional nanowires with strong spin-orbit coupling and proximity-induced superconductivity are predicted to exhibit topological superconductivity with condensed-matter analogues to Majorana fermions. Here, the nonequilibrium Green's function approach with the generalized Kadanoff-Baym ansatz is employed to study the electron-correlation effects and their role in the topological superconducting phase in and out of equilibrium. Electron-correlation effects are found to affect the transient signatures regarding the zero-energy Majorana states, when the superconducting nanowire is subjected to external perturbations such as magnetic-field quenching, laser-pulse excitation, and coupling to biased normal-metal leads.

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Riku Tuovinen. 2021-05-13. Electron correlation effects in superconducting nanowires in and out of equilibrium. https://doi.org/10.1088/1367-2630%2Fac1898

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