Platform for controllable Majorana zero modes using superconductor/ferromagnet heterostructures

Giorgos Livanas (), Nikolaos Vanas, Manfred Sigrist and Georgios Varelogiannis
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Giorgos Livanas: NTUA
Nikolaos Vanas: NTUA
Manfred Sigrist: Institut für Theoretische Physik, ETH
Georgios Varelogiannis: NTUA

The European Physical Journal B: Condensed Matter and Complex Systems, 2022, vol. 95, issue 3, 1-7

Abstract: Abstract We propose a novel platform for the creation and manipulation of Majorana zero modes consisting of a ferromagnetic metallic wire placed between conventional superconductors which are in proximity to ferromagnetic insulators. Our device relies on the interplay of applied supercurrents and exchange fields emerging from the ferromagnetic insulators. We assert that the proposed superconductor/ferromagnet heterostructures exhibit enhanced controllability, since topological superconductivity can be tuned apart from gate voltages applied on the ferromagnetic wire, also by manipulating the applied supercurrents and/or the magnetisation of the ferromagnetic insulators. Graphic abstract

Date: 2022
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DOI: 10.1140/epjb/s10051-022-00302-3

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