Supersolid Phase of Hard-Core Bosons on a Triangular Lattice

Journal Article · Fri Dec 02 04:00:00 EST 2005 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.95.237204· OSTI ID:20699661

Boninsegni, Massimo ^[1]; Prokof'ev, Nikolay ^[2]

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1. Department of Physics, University of Alberta, Edmonton, Alberta T6G 2J1 (Canada)
2. Department of Physics, University of Massachusetts, Amherst, Massachusetts 01003 (United States)

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{sup '},-m{sup '}) 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.

• OSTI ID: 20699661
• Journal Information: Physical Review Letters, Journal Name: Physical Review Letters Journal Issue: 23 Vol. 95; ISSN 0031-9007; ISSN PRLTAO
• Country of Publication: United States
• Language: English

Related Subjects

36 MATERIALS SCIENCE
71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
BOSONS
HELIUM 4
ISING MODEL
MAGNETIC FIELDS
MONTE CARLO METHOD
PHASE DIAGRAMS
S STATES
SPIN
SUPERFLUIDITY