Supersolid Order from Disorder: Hard-Core Bosons on the Triangular Lattice
Strongly Correlated Electrons
2009-11-11 v2
Abstract
We study the interplay of Mott localization, geometric frustration, and superfluidity for hard-core bosons with nearest-neighbor repulsion on the triangular lattice. For this model at half-filling, we demonstrate that superfluidity survives for arbitrarily large repulsion, and that diagonal solid order emerges in the strongly correlated regime from an order-by-disorder mechanism. This is thus an unusual example of a stable supersolid phase of hard-core lattice bosons at a commensurate filling.
Cite
@article{arxiv.cond-mat/0505258,
title = {Supersolid Order from Disorder: Hard-Core Bosons on the Triangular Lattice},
author = {R. G. Melko and A. Paramekanti and A. A. Burkov and A. Vishwanath and D. N. Sheng and L. Balents},
journal= {arXiv preprint arXiv:cond-mat/0505258},
year = {2009}
}
Comments
4 pages, 2 figures; finite-size scaling discussion added