Physics – Condensed Matter – Strongly Correlated Electrons
Scientific paper
2004-03-30
Phys. Rev. B 69, 220403(R) (2004)
Physics
Condensed Matter
Strongly Correlated Electrons
4 pages, 5 figures
Scientific paper
10.1103/PhysRevB.69.220403
The antiferromagnetic Ising model on a checkerboard lattice has an ice-like ground state manifold with extensive degeneracy. and, to leading order in J_xy, deconfined spinon excitations. We explore the role of cyclic exchange arising at order J^2_xy/J_z on the ice states and their associated spinon excitations. By mapping the original problem onto an equivalent quantum six--vertex model, we identify three different phases as a function of the chemical potential for flippable plaquettes - a phase with long range Neel order and confined spinon excitations, a non-magnetic state of resonating square plaquettes, and a quasi-collinear phase with gapped but deconfined spinon excitations. The relevance of the results to the square--lattice quantum dimer model is also discussed.
Misguich Grégoire
Penc Karlo
Shannon Nic
No associations
LandOfFree
Cyclic exchange, isolated states and spinon deconfinement in an XXZ Heisenberg model on the checkerboard lattice 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 Cyclic exchange, isolated states and spinon deconfinement in an XXZ Heisenberg model on the checkerboard lattice, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Cyclic exchange, isolated states and spinon deconfinement in an XXZ Heisenberg model on the checkerboard lattice will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-78581