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Article Dans Une Revue Nature Commun. Année : 2023

An Exact Chiral Amorphous Spin Liquid

Gino Cassella
  • Fonction : Auteur
Peru d'Ornellas
  • Fonction : Auteur
Thomas Hodson
  • Fonction : Auteur
Johannes Knolle
  • Fonction : Auteur

Résumé

Topological insulator phases of non-interacting particles have been generalized from periodic crystals to amorphous lattices, which raises the question whether topologically ordered quantum many-body phases may similarly exist in amorphous systems? Here we construct a soluble chiral amorphous quantum spin liquid by extending the Kitaev honeycomb model to random lattices with fixed coordination number three. The model retains its exact solubility but the presence of plaquettes with an odd number of sides leads to a spontaneous breaking of time reversal symmetry. We unearth a rich phase diagram displaying Abelian as well as a non-Abelian quantum spin liquid phases with a remarkably simple ground state flux pattern. Furthermore, we show that the system undergoes a finite-temperature phase transition to a conducting thermal metal state and discuss possible experimental realisations.

Dates et versions

hal-03769116 , version 1 (05-09-2022)

Identifiants

Citer

Gino Cassella, Peru d'Ornellas, Thomas Hodson, Willian M.H. Natori, Johannes Knolle. An Exact Chiral Amorphous Spin Liquid. Nature Commun., 2023, 14 (1), pp.6663. ⟨10.1038/s41467-023-42105-9⟩. ⟨hal-03769116⟩
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