Rakesh P. Tiwari, U. Zülicke, C. Bruder
Published 2014-01-08, updated 2014-01-13Version 2
Chiral Majorana-fermion modes are shown to emerge as edge excitations in a superconductor--topological-insulator hybrid structure that is subject to a magnetic field. The velocity of this mode is tunable by changing the magnetic-field magnitude and/or the superconductor's chemical potential. We discuss how quantum-transport measurements can yield experimental signatures of these modes. A normal lead coupled to the Majorana-fermion edge state through electron tunneling induces resonant Andreev reflections from the lead to the grounded superconductor, resulting in a distinctive pattern of differential-conductance peaks.
Comments: (13 pages, Accepted for publication in New Journal of Physics, an extension of and expansion on our previous work arXiv:1210.4057). arXiv admin note: text overlap with arXiv:1210.4057
Journal: New J. Phys. 16, 025004 (2014)
Majorana fermions from Landau quantization in a superconductor--topological-insulator hybrid structure
Signatures of topological Josephson junctions
Signatures of merging Dirac points in optics and transport
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