Structure, Bose-Einstein condensation, and superfluidity of two-dimensional confined dipolar assemblies

Journal Article · Fri Jul 01 00:00:00 EDT 2011 · Physical Review. B, Condensed Matter and Materials Physics

DOI:https://doi.org/10.1103/PHYSREVB.84.014534· OSTI ID:21596820

Jain, Piyush; Cinti, Fabio; Boninsegni, Massimo ^[1]

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1. Department of Physics, University of Alberta, Edmonton, Alberta (Canada)

Low-temperature properties of harmonically confined two-dimensional assemblies of dipolar bosons are systematically investigated by Monte Carlo simulations. Calculations carried out for different numbers of particles and strengths of the confining potential yield evidence of a quantum phase transition from a superfluid to a crystal-like phase, consistently with what is observed in the homogeneous system. It is found that the crystal phase nucleates in the center of the trap, as the density increases. Bose-Einstein condensation vanishes at T=0 upon entering the crystalline phase, concurrently with the disappearance of the superfluid response.

• OSTI ID: 21596820
• Journal Information: Physical Review. B, Condensed Matter and Materials Physics, Vol. 84, Issue 1; Other Information: DOI: 10.1103/PhysRevB.84.014534; (c) 2011 American Institute of Physics; 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
BOSE-EINSTEIN CONDENSATION
BOSONS
COMPUTERIZED SIMULATION
CRYSTALS
DENSITY
MONTE CARLO METHOD
PHASE TRANSFORMATIONS
SUPERFLUIDITY
TEMPERATURE ZERO K
TRAPS
TWO-DIMENSIONAL CALCULATIONS
CALCULATION METHODS
PHYSICAL PROPERTIES
SIMULATION