Majorana Fermions from Landau Quantization in a Superconductor and Topological-Insulator Hybrid Structure
Rakesh P. Tiwari, U. Zülicke, C. Bruder
DOI 10.1103/PhysRevLett.110.186805 · Physical Review Letters
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Abstract
We show that the interplay of cyclotron motion and Andreev reflection experienced by massless-Dirac-like charge carriers in topological-insulator surface states generates a Majorana-particle excitation. On the basis of an envelope-function description of the Dirac-Andreev edge states, we discuss the kinematic properties of the Majorana mode and find them to be tunable by changing the superconductor’s chemical potential and/or the magnitude of the perpendicular magnetic field. Our proposal opens up new possibilities for studying Majorana fermions in a controllable setup.
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