Flux-induced topological superconductivity in full-shell nanowires.

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ID: 101730
2020
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Abstract
Hybrid semiconductor-superconductor nanowires have emerged as a promising platform for realizing topological superconductivity (TSC). Here, we present a route to TSC using magnetic flux applied to a full superconducting shell surrounding a semiconducting nanowire core. Tunneling into the core reveals a hard induced gap near zero applied flux, corresponding to zero phase winding, and a gapped region with a discrete zero-energy state around one applied flux quantum, corresponding to 2π phase winding. Theoretical analysis indicates that the winding of the superconducting phase can induce a transition to a topological phase supporting Majorana zero modes. Measured Coulomb blockade peak spacing around one flux quantum shows a length dependence that is consistent with the existence of Majorana modes at the ends of the nanowire.
Reference Key
vaitieknas2020fluxinducedscience Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Vaitiekėnas, S;Winkler, G W;van Heck, B;Karzig, T;Deng, M-T;Flensberg, K;Glazman, L I;Nayak, C;Krogstrup, P;Lutchyn, R M;Marcus, C M;
Journal science (new york, ny)
Year 2020
DOI
eaav3392
URL
Keywords
quantum dots electron transport coulomb interactions heat currents rectification

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