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TT: Fachverband Tiefe Temperaturen
TT 25: Poster Session: Topology
TT 25.9: Poster
Thursday, September 30, 2021, 13:30–16:00, P
Improving topological superconductivity in two- and three-dimensional Josephson junctions — •Aidan Wastiaux1 and Falko Pientka1,2 — 1Max Planck Institute for the Physics of Complex Systems, Dresden — 2Institute of Theoretical Physics, Goethe University, Frankfurt am Main
As opposed to the numerous theoretical developments in the field of topological heterostructures hosting robust quasiparticles, difficulties are piling up for experimentalists on their way to building realistic and tunable setups with usable topological states. We address this widespread issue in a specific platform involving a planar Josephson junction made of a semiconductor with strong spin-orbit coupling by proposing easy-to-reach regimes of parameters with enhanced stability of the Majorana end states. Moreover, the extension of those findings to a three-dimensional model provides henceforth a new flexible platform for realizing chiral Majorana edge states. Possible setups using Van der Waals heterostructures are suggested.