Interference of Majorana fermions in chiral topological superconductors

Details Interference of Majorana fermions in chiral topological superconductors Interference of Majorana fermions in chiral topological superconductors

2012-04-16

arxiv.org/abs/1204.3382v1

Physics

Condensed Matter

Superconductivity

9 pages, 10 figures

Scientific paper

We study charge transport of a system of heterostructure of quantum anomalous Hall system (QAH) and spin-singlet s-wave superconductor (QAH+s), via the proximity effect. We calculate the charge conductance between normal metal and QAH+s based on recursive Green's function. The angle resolved conductance \gamma(ky, \omega) with momentum ky parallel to the interface and bias voltage V satisfying \omega = eV shows a rich structure depending on Chern number N. It is remarkable that \gamma(ky,Eedge(ky)) with Eedge(ky) being energy dispersion relation of the edge modes becomes 0 for N = 0 and N = 2 while it becomes 2e^2/h for N = 1.

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