Statistics of Fractionalized Excitations through Threshold Spectroscopy

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

    Research output: Contribution to journalArticlepeer-review

    30 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

    ASJC Scopus subject areas

    • Physics and Astronomy(all)

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