Supersolid Order from Disorder: Hard-Core Bosons on the Triangular Lattice

Details Supersolid Order from Disorder: Hard-Core Bosons on the Triangular Lattice Supersolid Order from Disorder: Hard-Core Bosons on the Triangular Lattice

2005-05-10

arxiv.org/abs/cond-mat/0505258v2

Phys. Rev. Lett. 95, 127207 (2005)

Physics

Condensed Matter

Strongly Correlated Electrons

4 pages, 2 figures; finite-size scaling discussion added

Scientific paper

10.1103/PhysRevLett.95.127207

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.

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