Supersolid of hardcore bosons on the face-centered cubic lattice

Journal Article · Tue May 01 00:00:00 EDT 2007 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.75.180502· OSTI ID:20951407

Suzuki, Takahumi; Kawashima, Naoki ^[1]

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1. Institute for Solid State Physics, University of Tokyo, Kashiwa, Chiba 277-8581 (Japan)

We investigate a supersolid state in hardcore boson models on the face-centered-cubic (fcc) lattice. The supersolid state is characterized by a coexistence of crystalline order and superfluidity. Using a quantum Monte Carlo method based on the directed-loop algorithm, we calculate static structure factors and superfluid density at finite temperature, from which we obtain the phase diagram. The supersolid phase exists at intermediate fillings between a three-quarter-filled solid phase and a half-filled solid phase. We also discuss the mechanism of the supersolid state on the fcc lattice.

• OSTI ID: 20951407
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 75, Issue 18; Other Information: DOI: 10.1103/PhysRevB.75.180502; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA); ISSN 1098-0121
• Country of Publication: United States
• Language: English

Related Subjects

75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
36 MATERIALS SCIENCE
ALGORITHMS
BOSONS
DENSITY
FCC LATTICES
HAMILTONIANS
MAGNETIZATION
MONTE CARLO METHOD
PHASE DIAGRAMS
SOLIDS
SPIN
STRUCTURE FACTORS
SUPERFLUIDITY
TEMPERATURE DEPENDENCE