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TT: Fachverband Tiefe Temperaturen
TT 53: Topology: Majorana Physics
TT 53.11: Vortrag
Donnerstag, 19. März 2020, 12:15–12:30, HSZ 103
Majorana wires coupled to s-wave superconductors with vortices — •Alexander Nikolaenko1,2 and Falko Pientka2 — 1Karazin Kharkiv National University, Kharkiv 61022, Ukraine — 2Max Planck Institute for the Physics of Complex Systems,Nöthnitzer Str. 38, 01187 Dresden, Germany
One-dimensional systems proximity-coupled to a superconductor can be driven into a topological superconducting phase by an external magnetic field. Here, we investigate the effect of vortices created by the magnetic field in a type-II superconductor providing the proximity effect. We identify different ways in which the topological protection of Majorana modes can be compromised and discuss strategies to circumvent these detrimental effects. Our findings are also relevant to topological phases in proximitized quantum Hall edge states.