Phase diagram of an anisotropic bosonic t-J model
This is the pre-published version harvested from ArXiv. The published version is located at http://prb.aps.org/abstract/PRB/v77/i9/e092502
We have studied by quantum Monte Carlo simulations the low temperature phase diagram of a mixture of isotopic, hard core bosons, described by the t-Jz-J⊥ model, with J⊥=αJz. The coexistence of superfluid hole-rich and insulating, antiferromagnetically ordered hole-free phases is observed at sufficiently low hole density for any α<1. A two-component checkerboard supersolid phase is not observed. The experimental relevance and possible broader implications of these findings are discussed.
M Boninsegni and Nikolai Prokof'ev. "Phase diagram of an anisotropic bosonic t-J model" Physical Review B 77.9 (2008).
Available at: http://works.bepress.com/nikolai_prokofev/15