Unconventional Josephson signatures of Majorana bound states

Liang Jiang, David Pekker, Jason Alicea, Gil Refael, Yuval Oreg, Oppen, Felix Von Oppen

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number236401
JournalPhysical review letters
Volume107
Issue number23
DOIs
StatePublished - 28 Nov 2011

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy

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