Proposed Aharonov-Casher interference measurement of non-Abelian vortices in chiral p-wave superconductors

Eytan Grosfeld, Babak Seradjeh, Smitha Vishveshwara

Research output: Contribution to journalArticle

Abstract

We propose a two-path vortex interferometry experiment based on the Aharonov-Casher effect for detecting the non-Abelian nature of vortices in a chiral P-wave superconductor. The effect is based on observing vortex interference patterns upon enclosing a finite charge of externally controllable magnitude within the interference path. We predict that when the interfering vortices enclose an odd number of identical vortices in their path, the interference pattern disappears only for non-Abelian vortices. When pairing involves two distinct spin species, we derive the mutual statistics between half quantum and full quantum vortices and show that, remarkably, our predictions still hold for the situation of a full quantum vortex enclosing a half quantum vortex in its path. We discuss the experimentally relevant conditions under which these effects can be observed.

Original languageEnglish (US)
Article number104513
JournalPhysical Review B - Condensed Matter and Materials Physics
Volume83
Issue number10
DOIs
StatePublished - Mar 21 2011

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

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