Tunable Majorana fermion from Landau quantization in 2D topological superconductors

R. S. Akzyanov, A. L. Rakhmanov, A. V. Rozhkov, Franco Nori

Research output: Contribution to journalArticlepeer-review

13 Citations (Scopus)

Abstract

We study Majorana fermions in a two-dimensional topological superconductor placed in a transverse magnetic-field B. We consider a topological insulator/superconductor heterostructure and a two-dimensional p-wave superconductor. A single field-generated vortex creates two Majorana fermions, one of which is hosted at the vortex core. The wave function of the second Majorana state is localized in the superconductor volume along a circle with a radius of r∗ B-1 centered at the vortex core. In the case of many vortices, the sensitivity of r∗ to the magnetic field B may be used to control the coupling between the Majorana fermions. The latter property could be an asset for quantum computations.

Original languageEnglish
Article number125428
JournalPhysical Review B
Volume94
Issue number12
DOIs
Publication statusPublished - 19 Sep 2016
Externally publishedYes

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