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Two-dimensional gapless spin liquids in frustrated SU(N) quantum magnets

Peng Li·Shun-Qing Shen
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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.

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Peng Li, Shun-Qing Shen. 2004-10-22. Two-dimensional gapless spin liquids in frustrated SU(N) quantum magnets. https://doi.org/10.1088/1367-2630%2F6%2F1%2F160

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