Effective model for Majorana modes in graphene
arXiv:1903.00807 · doi:10.1103/PhysRevB.100.125411
Abstract
It was recently proposed that the interface between a graphene nanoribbon in the canted antiferromagnetic quantum Hall state and a s-wave superconductor may present topological superconductivity, resulting in the appearance of Majorana zero modes. However, a description of the low-energy physics in terms of experimentally controllable parameters was still missing. Starting from a mean-field continuum model for graphene in proximity to a superconductor, we derive the low-energy effective Hamiltonian describing the interface of this heterojunction from first principles. A comparison between tight-binding simulations and analytical calculations with effective masses suggests that normal reflections at the interface must be considered in order to fully describe the low-energy physics.
arXiv comment9 pages, 3 figures
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Cited by in corpus (6)
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- Solitonic in-gap modes in a superconductor-quantum antiferromagnet interface
- Quasiperiodic criticality and spin-triplet superconductivity in superconductor-antiferromagnet moire patterns
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- Chiral Majorana Fermions in two dimensional square lattice antiferromagnet with proximity-induced superconductivity