Abstract
A spatially oscillating pair potential with momentum drives a deconfinement transition of the Majorana bound states in the vortex cores of a Fu-Kane heterostructure (a 3D topological insulator with Fermi velocity , on a superconducting substrate with gap , in a perpendicular magnetic field). In the deconfined phase at zero chemical potential the Majorana fermions form a dispersionless Landau level, protected by chiral symmetry against broadening due to vortex scattering. The coherent superposition of electrons and holes in the Majorana Landau level is detectable as a local density of states oscillation with wave vector . The striped pattern also provides a means to measure the chirality of the Majorana fermions.
- Received 21 January 2021
- Accepted 26 April 2021
DOI:https://doi.org/10.1103/PhysRevLett.126.226801
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