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Title: Classical spin liquid instability driven by off-diagonal exchange in strong spin-orbit magnets
Authors: Rousochatzakis, Ioannis
Perkins, Natalia B.
Issue Date: 2017
Publisher: © American Physical Society
Citation: ROUSOCHATZAKIS, I. and PERKINS, N.B., 2017. Classical spin liquid instability driven by off-diagonal exchange in strong spin-orbit magnets. Physical Review Letters, 118: 147204.
Abstract: © 2017 American Physical Society. We show that the off-diagonal exchange anisotropy drives Mott insulators with strong spin-orbit coupling to a classical spin liquid regime, characterized by an infinite number of ground states and Ising variables living on closed or open strings. Depending on the sign of the anisotropy, quantum fluctuations either fail to lift the degeneracy down to very low temperatures, or select noncoplanar magnetic states with unconventional spin correlations. The results apply to all 2D and 3D tricoordinated materials with bond-directional anisotropy and provide a consistent interpretation of the suppression of the x-ray magnetic circular dichroism signal reported recently for β-Li2IrO3 under pressure.
Description: This paper was accepted for publication in the journal Physical Review Letters and the definitive published version is available at https://doi.org/10.1103/PhysRevLett.118.147204
Sponsor: This work was supported by NSF Grant No. DMR-1511768. NP acknowledges the support of NSF GRANT No. PHY-1066293.
Version: Accepted for publication
DOI: 10.1103/PhysRevLett.118.147204
URI: https://dspace.lboro.ac.uk/2134/33696
Publisher Link: https://doi.org/10.1103/PhysRevLett.118.147204
ISSN: 0031-9007
Appears in Collections:Published Articles (Physics)

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