Electron correlation effects in superconducting nanowires in and out of equilibrium

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.

arXiv comment12 pages, 6 figures

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Cited by in corpus (7)

• A many-body approach to transport in quantum systems: From the transient regime to the stationary state
• Time-linear quantum transport simulations with correlated nonequilibrium Green's functions
• Topological phase diagrams of exactly solvable non-Hermitian interacting Kitaev chains
• Transient dynamics of a magnetic impurity coupled to superconducting electrodes: exact numerics versus perturbation theory
• Transient effects in quantum dots contacted via topological superconductor
• Interacting electrons in a flat-band system within the Generalized Kadanoff-Baym Ansatz
• Current cross-correlation spectroscopy of Majorana bound states