Spatial coupling of quantum-anomalous-Hall and chiral-Majorana modes
Javier Osca, Marc Alomar, Lloren\c{c} Serra
TL;DR
This paper models the spatial distribution of chiral Majorana modes in a quantum anomalous Hall junction, analyzing how magnetic fields influence their coupling and conductance.
Contribution
It introduces a simplified Hamiltonian to describe mode coupling and investigates magnetic field effects on the junction's properties.
Findings
Coupling between modes is affected by orbital magnetic effects.
The model predicts specific conductance behaviors under magnetic influence.
Spatial distributions of modes are characterized in the junction.
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.
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