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Article
Supersolid Phase of Hard-Core Bosons on a Triangular Lattice
Physics Review Letters
  • M Boninsegni
  • Nikolai Prokof'ev, University of Massachusetts - Amherst
Publication Date
2005
Abstract

We study properties of the supersolid phase observed for hard-core bosons on the triangular lattice near half-integer filling factor, and the phase diagram of the system at finite temperature. We find that the solid order is always of the (2m,-m′,-m′) with m changing discontinuously from positive to negative values at half filling, in contrast with phases observed for Ising spins in a transverse magnetic field. At finite temperature we find two intersecting second-order transition lines: one in the 3-state Potts universality class and the other of the Kosterlitz-Thouless type.

Comments
This is the pre-published version harvested from ArXiv. The published version is located at http://prl.aps.org/abstract/PRL/v95/i23/e237204
Citation Information
M Boninsegni and Nikolai Prokof'ev. "Supersolid Phase of Hard-Core Bosons on a Triangular Lattice" Physics Review Letters Vol. 95 Iss. 23 (2005)
Available at: http://works.bepress.com/nikolai_prokofev/31/