Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: Scenario for Cs2CuCl4
Jason Alicea, Olexei I. Motrunich, Matthew P. A. Fisher
Abstract
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 non-compact U(1) gauge field. This ``algebraic vortex liquid" supports gapless spin excitations and universal power-law correlations in the dynamical spin structure factor which are consistent with those observed in Cs2CuCl4. We suggest future neutron scattering experiments that should help distinguish between the algebraic vortex liquid and other spin liquids and quantum critical points previously proposed in the context of Cs2CuCl4.
Create a lesson
Related papers
Photoinduced switching of orbital-selective Mott states
M. Lisiecki, P. Werner, J. Herbrych
Ground-state properties of uniaxial magnetic model for antiferromagnetic 1/1 periodic approximants to icosahedral quasicrystals
Shinji Watanabe
Negligible Kitaev interaction in the van der Waals antiferromagnet NiBr2 revealed by neutron spectroscopy
Hao Xu, Shufan Cheng, Yanyan Shangguan et al.
Interfacial polarity control of anomalous Hall effect in LaCoO3-SrIrO3 heterostructures
Yeonjae Lee, Chanyoung Shin, Youngdo Kim et al.
Extensions of the Haldane gap proof: higher dimensions, near degeneracy, fermions and tensor-network states
Tarun Grover
Observable-Based Learning of Effective Entanglement Hamiltonians
Siyi Yang, Yuzhi Liu, Yi-Ming Ding et al.