Statistics of Fractionalized Excitations through Threshold Spectroscopy

Siddhardh C. Morampudi, Ari M. Turner, Frank Pollmann, Frank Wilczek

Research output: Contribution to journalArticlepeer-review

27 Scopus citations

Abstract

We show that neutral anyonic excitations have a signature in spectroscopic measurements of materials: The low-energy onset of spectral functions near the threshold follows universal power laws with an exponent that depends only on the statistics of the anyons. This provides a route, using experimental techniques such as neutron scattering and tunneling spectroscopy, for detecting anyonic statistics in topologically ordered states such as gapped quantum spin liquids and hypothesized fractional Chern insulators. Our calculations also explain some recent theoretical results in spin systems.

Original languageEnglish (US)
Article number227201
JournalPhysical Review Letters
Volume118
Issue number22
DOIs
StatePublished - May 31 2017
Externally publishedYes

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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