Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2005-08-22
Phys. Rev. Lett. 95, 247203 (2005)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 3 figures; minor revisions, momenta in Fig. 2 corrected
Scientific paper
10.1103/PhysRevLett.95.247203
Motivated by inelastic neutron scattering data on Cs_2CuCl_4, 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 Cs_2CuCl_4. 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 Cs_2CuCl_4.
Alicea Jason
Fisher Matthew P. A.
Motrunich Olexei I.
No associations
LandOfFree
Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: Scenario for Cs_2CuCl_4 does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: Scenario for Cs_2CuCl_4, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Algebraic vortex liquid in spin-1/2 triangular antiferromagnets: Scenario for Cs_2CuCl_4 will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-165622