New critical behavior in the dense two-dimensional classical Coulomb gas

Journal Article · Sun Mar 25 23:00:00 EST 1990 · Physical Review Letters; (USA)

DOI:https://doi.org/10.1103/PhysRevLett.64.1483· OSTI ID:6900273

Lee, J; Teitel, S ^[1]

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1. Department of Physics, University of Rochester, Rochester, New York 14627 (USA) Astronomy, University of Rochester, Rochester, New York 14627 (USA)

We carry out Monte Carlo simulations of the two-dimensional classical neutral Coulomb gas of integer charges on a square lattice, as a function of temperature and chemical potential, and find new critical behavior. At low temperature, as density increases, the system has a first-order transition to an ordered-charge lattice. As temperature increases, this dense phase has a Kosterlitz-Thouless transition followed by an Ising transition. The first-order line joins the line of Ising transitions at a new tricritical point.

• DOE Contract Number: FG02-89ER14017
• OSTI ID: 6900273
• Journal Information: Physical Review Letters; (USA), Journal Name: Physical Review Letters; (USA) Vol. 64:13; ISSN PRLTA; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

656000* -- Condensed Matter Physics
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
COULOMB FIELD
ELECTRIC FIELDS
FLUIDS
GASES
MONTE CARLO METHOD
PHASE TRANSFORMATIONS
TEMPERATURE DEPENDENCE
TWO-DIMENSIONAL CALCULATIONS