Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: scenario for Cs2CuCl4.

@article{Alicea2005AlgebraicVL,
  title={Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: scenario for Cs2CuCl4.},
  author={Jason Alicea and Olexei I. Motrunich and Matthew P. A. Fisher},
  journal={Physical review letters},
  year={2005},
  volume={95 24},
  pages={247203}
}
Motivated by inelastic neutron scattering data on Cs2CuCl4, we explore spin-1/2 triangular lattice antiferromagnets with both spatial and easy-plane exchange anisotropies, the latter due to an observed Dzyaloshinskii-Moriya interaction. Exploiting a duality mapping followed by a fermionization of the dual vortex degrees of freedom, we find a novel critical spin-liquid phase described in terms of Dirac fermions with an emergent global SU(4) symmetry minimally coupled to a noncompact U(1) gauge… CONTINUE READING