Abstract
We study the phase diagram of the frustrated model on the honeycomb lattice by using accurate correlated wave functions and variational Monte Carlo simulations. Our results suggest that a spin-liquid state is energetically favorable in the region of intermediate frustration, intervening between two magnetically ordered phases. The latter ones are represented by classically ordered states supplemented with a long-range Jastrow factor, which includes relevant correlations and dramatically improves the description provided by the purely classical solution of the model. The construction of the spin-liquid state is based on a decomposition of the underlying bosonic particles in terms of spin- fermions (partons), with a Gutzwiller projection enforcing no single occupancy, as well as a long-range Jastrow factor.
- Received 8 July 2013
DOI:https://doi.org/10.1103/PhysRevB.88.241109
©2013 American Physical Society