Spin Liquid Phases for Spin-1 Systems on the Triangular Lattice
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Xu-2012-Spin Liquid Phases for Spin-1 Systems on.pdf
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Author(s)
Xu, Cenke
Qi, Yang
Balents, Leon
Fisher, Matthew P. A.
Wang, Fa
Date Issued
February 2012
Journal
Physical Review Letters
Publisher
American Physical Society
Citation
Xu, Cenke et al. “Spin Liquid Phases for Spin-1 Systems on the Triangular Lattice.” Physical Review Letters 108.8 (2012): n. pag. Web. 11 May 2012. © 2012 Institute of Electrical and Electronics Engineers
Version
Final published version
Abstract
Motivated by recent experiments on material Ba3NiSb2O9, we propose two novel spin liquid phases (A and B) for spin-1 systems on a triangular lattice. At the mean field level, both spin liquid phases have gapless fermionic spinon excitations with quadratic band touching; thus, in both phases the spin susceptibility and γ=Cv/T saturate to a constant at zero temperature, which are consistent with the experimental results on Ba3NiSb2O9. On the lattice scale, these spin liquid phases have Sp(4)∼SO(5) gauge fluctuation, while in the long wavelength limit this Sp(4) gauge symmetry is broken down to U(1)×Z2 in the type A spin liquid phase, and broken down to Z4 in the type B phase. We also demonstrate that the A phase is the parent state of the ferroquadrupole state, nematic state, and the noncollinear spin density wave state.
MIT Department
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevLett.108.087204
