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Title: Quantum spin liquid in the semiclassical regime
Authors: Rousochatzakis, Ioannis
Sizyuk, Yuriy
Perkins, Natalia B.
Issue Date: 2018
Publisher: © The authors. Published by Nature Communications
Citation: ROUSOCHATZAKIS, I., SIZYUK, Y. and PERKINS, N.B., 2018. Quantum spin liquid in the semiclassical regime. Nature Communications, 9: 1575.
Abstract: © 2018 The Author(s). Quantum spin liquids (QSLs) have been at the forefront of correlated electron research ever since their proposal in 1973, and the realization that they belong to the broader class of intrinsic topological orders. According to received wisdom, QSLs can arise in frustrated magnets with low spin S, where strong quantum fluctuations act to destabilize conventional, magnetically ordered states. Here, we present a Z 2 QSL ground state that appears already in the semiclassical, large-S limit. This state has both topological and symmetry-related ground-state degeneracy, and two types of gaps, a "magnetic flux" gap that scales linearly with S and an "electric charge" gap that drops exponentially in S. The magnet is the spin-S version of the spin-1/2 Kitaev honeycomb model, which has been the subject of intense studies in correlated electron systems with strong spin-orbit coupling, and in optical lattice realizations with ultracold atoms.
Description: This is an Open Access Article. It is published by Nature Communications under the Creative Commons Attribution 4.0 Unported Licence (CC BY). Full details of this licence are available at: http://creativecommons.org/licenses/by/4.0/
Version: Published
DOI: 10.1038/s41467-018-03934-1
URI: https://dspace.lboro.ac.uk/2134/33684
Publisher Link: https://doi.org/10.1038/s41467-018-03934-1
Appears in Collections:Published Articles (Physics)

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