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arXiv · 2209.13076

Flux-periodic oscillations in proximitized core-shell nanowires

Kristjan Ottar Klausen·Anna Sitek·Sigurdur I. Erlingsson·Andrei Manolescu
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Abstract

Flux-periodic oscillations of the superconducting gap in proximitized core-shell nanowires are explored. Periodicity of oscillations in the energy spectrum of a cylindrical nanowire is compared with nanowires having hexagonal and square cross-section geometry, along with the effects of Zeeman and Rashba spin-orbit interaction. A transition between h/e and h/2e periodicity is found and shown to be dependent on the chemical potential, with correspondence to degeneracy points of the angular momentum quantum number. For a thin shell of a square nanowire, solely h/e periodicity is found in the infinite wire spectrum and shown to result from energy separation between the lowest groups of excited states.

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Kristjan Ottar Klausen, Anna Sitek, Sigurdur I. Erlingsson, Andrei Manolescu. 2022-09-27. Flux-periodic oscillations in proximitized core-shell nanowires. https://doi.org/10.1088/1361-6528/acd6a5

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