Emergence of a field-driven U(1) spin liquid in spin-1 Kitaev systems
ORAL
Abstract
Recent proposals for spin-1 Kitaev materials, such as Na3Ni2SbO6, have shown that these compounds naturally realize antiferromagentic (AFM) Kitaev couplings. Interest in such AFM Kitaev systems has recently sparked by the observation of a transition to a gapless U(1) spin liquid at intermediate field strengths in the AFM spin-1/2 Kitaev model. However, all known spin-1/2 Kitaev materials exhibit ferromagnetic bond-directional exchanges. Here we discuss the physics of the spin-1 Kitaev model in a magnetic field and show, by extensive numerical analysis, that for AFM couplings it exhibits an extended gapless U(1) quantum spin liquid at intermediate field strengths. The close analogy to its spin-1/2 counterpart suggests that this gapless spin liquid exhibits a spinon Fermi surface.
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Presenters
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Simon Trebst
Univ Cologne, Institute for Theoretical Physics, University of Cologne, University of Cologne
Authors
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Simon Trebst
Univ Cologne, Institute for Theoretical Physics, University of Cologne, University of Cologne
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Ciaran Hickey
Univ Cologne, Institute for Theoretical Physics, University of Cologne, University of Cologne
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Panagiotis Peter Stavropoulos
University of Toronto, Physics, University of Toronto, Univ of Toronto
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Christoph Berke
Univ Cologne, University of Cologne
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Hae-Young Kee
University of Toronto, Physics, University of Toronto, Univ of Toronto