2007/12/31 by Massimo Boninsegni, M. Boninsegni, Nikolay Prokof’ev +1 · 1 citation
Physics and Astronomy · #Cold Atom Physics and Bose-Einstein Condensates #Physics of Superconductivity and Magnetism #Quantum, superfluid, helium dynamics #cond-mat.other #cond-mat.stat-mech
paper · pdf · doi:10.1103/physrevb.77.092502
published as Phys. Rev. B 77, 092502 (2008) · Replaced with published version
openalex publication_date 2008/03/05 · arxiv created 2008/03/06 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
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\text\ensuremath-Jz\text\ensuremath-J_\ensuremath⊥ model, with J_\ensuremath⊥=\ensuremathαJz. The coexistence of superfluid hole-rich and insulating, antiferromagnetically ordered hole-free phases is observed at sufficiently low hole density for any \ensuremathα<1. A two-component checkerboard supersolid phase is not observed. The experimental relevance and possible broader implications of these findings are discussed.