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Condensed Matter > Mesoscale and Nanoscale Physics
Title: Magnus effect on a Majorana zero-mode
(Submitted on 10 Mar 2023 (v1), last revised 17 Apr 2023 (this version, v2))
Abstract: A supercurrent on the proximitized surface of a topological insulator can cause a delocalization transition of a Majorana fermion bound to a vortex core as a zero-mode. Here we study the dynamics of the deconfinement, as a manifestation of the Magnus effect (the coupling of the superflow to the velocity field in the vortex). The initial acceleration of the Majorana fermion is $\pm 2v_{\rm F}^2 K/\hbar$, perpendicular to the Cooper pair momentum $K$, for a $\pm 2\pi$ winding of the superconducting phase around the vortex. The quasiparticle escapes with a constant velocity from the vortex core, which we calculate in a semiclassical approximation and compare with computer simulations.
Submission history
From: Gal Lemut [view email][v1] Fri, 10 Mar 2023 14:47:05 GMT (654kb,D)
[v2] Mon, 17 Apr 2023 12:03:00 GMT (652kb,D)
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