Weyl-Majorana solenoid

P. Baireuther, J. Tworzydlo, M. Breitkreiz, I. Adagideli, C.W.J. Beenakker*

*Corresponding author for this work

Research output: Contribution to journalArticleAcademicpeer-review

17 Citations (Scopus)

Abstract

A Weyl semimetal wire with an axial magnetization has metallic surface states (Fermi arcs) winding along its perimeter, connecting bulk Weyl cones of opposite topological charge (Berry curvature). We investigate what happens to this 'Weyl solenoid' if the wire is covered with a superconductor, by determining the dispersion relation of the surface modes propagating along the wire. Coupling to the superconductor breaks up the Fermi arc into a pair of Majorana modes, separated by an energy gap. Upon variation of the coupling strength along the wire there is a gap inversion that traps the Majorana fermions.
Original languageEnglish
Article number025006
JournalNew journal of physics
Volume19
DOIs
Publication statusPublished - Feb 2017
Externally publishedYes

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