Endstates in multichannel spinless p-wave superconducting wires

Multimode spinless p-wave superconducting wires with a width W much smaller than the superconducting coherence length \xi are known to have multiple low-energy subgap states localized near the wire's ends. Here we compare the typical energies of such endstates for various terminations of the wi...

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Bibliographic Details
Published inarXiv.org
Main Authors M -T Rieder, Kells, G, Duckheim, M, Meidan, D, Brouwer, P W
Format Paper Journal Article
LanguageEnglish
Published Ithaca Cornell University Library, arXiv.org 12.07.2012
Subjects
Coherence length
Physics - Mesoscale and Nanoscale Physics
Superconductivity
Superconductors
Wire
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Summary:Multimode spinless p-wave superconducting wires with a width W much smaller than the superconducting coherence length \xi are known to have multiple low-energy subgap states localized near the wire's ends. Here we compare the typical energies of such endstates for various terminations of the wire: A superconducting wire coupled to a normal-metal stub, a weakly disordered superconductor wire and a wire with smooth confinement. Depending on the termination, we find that the energies of the subgap states can be higher or lower than for the case of a rectangular wire with hard-wall boundaries.
ISSN:2331-8422
DOI:10.48550/arxiv.1207.2993