Unconventional Josephson Signatures of Majorana Bound States

Liang Jiang, David Pekker, Jason Alicea, Gil Refael, Yuval Oreg, and Felix von Oppen
Phys. Rev. Lett. 107, 236401 – Published 28 November 2011
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Abstract

A junction between two topological superconductors containing a pair of Majorana fermions exhibits a “fractional” Josephson effect, 4π periodic in the superconductors’ phase difference. An additional fractional Josephson effect, however, arises when the Majorana fermions are spatially separated by a superconducting barrier. This new term gives rise to a set of Shapiro steps which are essentially absent without Majorana modes and therefore provides a unique signature for these exotic states.

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  • Received 27 July 2011

DOI:https://doi.org/10.1103/PhysRevLett.107.236401

© 2011 American Physical Society

Authors & Affiliations

Liang Jiang1, David Pekker1, Jason Alicea2, Gil Refael1, Yuval Oreg3, and Felix von Oppen4

  • 1Department of Physics, California Institute of Technology, Pasadena, California 91125, USA
  • 2Department of Physics and Astronomy, University of California, Irvine, California 92697, USA
  • 3Department of Condensed Matter Physics, Weizmann Institute of Science, Rehovot, 76100, Israel
  • 4Dahlem Center for Complex Quantum Systems and Fachbereich Physik, Freie Universität Berlin, 14195 Berlin, Germany

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Issue

Vol. 107, Iss. 23 — 2 December 2011

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