Infoscience

Journal article

Stabilization of the chiral phase of the SU(6m) Heisenberg model on the honeycomb lattice with m particles per site for m larger than 1

We show that, when N is a multiple of 6 (N = 6m, where m is an integer), the SU(N) Heisenberg model on the honeycomb lattice with m particles per site has a clear tendency toward chiral order as soon as m >= 2. This conclusion has been reached by a systematic variational Monte Carlo investigation of Gutzwiller projected wave functions as a function of m between the case of one particle per site (m = 1), for which the ground state has recently been shown to be in a plaquette singlet state, and the m -> 8 limit, where a mean-field approach has established that the ground state has chiral order. This demonstrates that the chiral phase can indeed be stabilized for not too large values of m, opening the way to its experimental realizations in other lattices.

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