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Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids

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  • Oliver Hart

    (Cavendish Laboratory)

  • Yuan Wan

    (Chinese Academy of Sciences
    Songshan Lake Materials Laboratory)

  • Claudio Castelnovo

    (Cavendish Laboratory)

Abstract

Realistic model Hamiltonians for quantum spin liquids frequently exhibit a large separation of energy scales between their elementary excitations. At intermediate, experimentally relevant temperatures, some excitations are sparse and hop coherently, whereas others are thermally incoherent and dense. Here, we study the interplay of two such species of quasiparticle, dubbed spinons and visons, which are subject to nontrivial mutual statistics – one of the hallmarks of quantum spin liquid behaviour. Our results for $${{\mathbb{Z}}}_{2}$$ Z 2 quantum spin liquids show an intriguing feedback mechanism, akin to the Nagaoka effect, whereby spinons become localised on temperature-dependent patches of expelled visons. This phenomenon has important consequences for the thermodynamic and transport properties of the system, as well as for its response to quenches in temperature. We argue that these effects can be measured in experiments and may provide viable avenues for obtaining signatures of quantum spin liquid behaviour.

Suggested Citation

  • Oliver Hart & Yuan Wan & Claudio Castelnovo, 2021. "Correlation holes and slow dynamics induced by fractional statistics in gapped quantum spin liquids," Nature Communications, Nature, vol. 12(1), pages 1-8, December.
    • Handle: RePEc:nat:natcom:v:12:y:2021:i:1:d:10.1038_s41467-021-21495-8
    DOI: 10.1038/s41467-021-21495-8
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