Eur. Phys. J. Special Topics 227, 2025–2035 (2019)
https://doi.org/10.1140/epjst/e2018-800050-3

Regular Article

Spatial coupling of quantum-anomalous-Hall and chiral-Majorana modes

¹ Institute for Cross-Disciplinary Physics and Complex Systems IFISC (CSIC-UIB), 07122 Palma, Spain
² Physics Department, University of the Balearic Islands, 07122 Palma, Spain

^a e-mail: llorens.serra@uib.es

Received: 12 April 2018
Received in final form: 26 June 2018
Published online: 18 January 2019

Abstract

We calculate density and current spatial distributions of a 2D model junction between a normal QAH contact and a superconducting QAH region hosting propagating (chiral) Majorana modes. We use a simplified Hamiltonian describing the spatial coupling of the modes on each side of the junction, as well as the related junction conductance. We study how this coupling is affected by orbital effects caused by an external magnetic field.