Two-dimensional gapless spin liquids in frustrated SU(N) quantum magnets
arXiv:cond-mat/0410536 · doi:10.1088/1367-2630/6/1/160
Abstract
A class of the symmetrically frustrated SU(N) models is constructed for quantum magnets based on the generators of SU(N) group. The total Hamiltonian lacks SU(N) symmtry. A mean field theory in the quasi-particle representation is developed for spin liquid states. Numerical solutions in two dimension indicate that the ground states are gapless and the quasi-particles are Dirac particles. The mechanism may be helpful in exploring the spin liquid phases in the spin-1 bilinear-biquadratic model and the spin-orbital model in higher dimensions.
9 pages, 3 figures, to appear in New Journal of Physics
References in corpus (3)
Cited by in corpus (13)
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