Statistics of Fractionalized Excitations through Threshold Spectroscopy

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

doi:10.1103/PhysRevLett.118.227201

Statistics of Fractionalized Excitations through Threshold Spectroscopy

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

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38 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 language	English (US)
Article number	227201
Journal	Physical Review Letters
Volume	118
Issue number	22
DOIs	https://doi.org/10.1103/PhysRevLett.118.227201
State	Published - May 31 2017

ASJC Scopus subject areas

General Physics and Astronomy

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10.1103/PhysRevLett.118.227201

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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.",

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Statistics of Fractionalized Excitations through Threshold Spectroscopy

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