Thermodynamics of two-dimensional Yukawa systems across coupling regimes
arXiv:1704.00976 · doi:10.1063/1.4979325
Abstract
Thermodynamics of two-dimensional Yukawa (screened Coulomb or Debye-Hückel) systems is studied systematically using molecular dynamics (MD) simulations. Simulations cover very broad parameter range spanning from weakly coupled gaseous states to strongly coupled fluid and crystalline states. Important thermodynamic quantities such as internal energy and pressure are obtained and accurate physically motivated fits are proposed. This allows us to put forward simple practical expressions to describe thermodynamic properties of two-dimensional Yukawa systems. For crystals, in addition to numerical simulations, the recently developed shortest-graph interpolation method is applied to describe pair correlations and hence thermodynamic properties. It is shown that the finite-temperature effects can be accounted for by using simple correction of peaks in the pair correlation function. The corresponding correction coefficients are evaluated using MD simulation. The relevance of the obtained results in the context of colloidal systems, complex (dusty) plasmas, ions absorbed to interfaces in electrolytes is pointed out.
11 pages, 3 figures, 5 tables
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Cited by in corpus (17)
- Lindemann melting criterion in two dimensions
- Thermodynamics and dynamics of two-dimensional systems with dipole-like repulsive interactions
- Thermal runaway in two-dimensional complex plasma crystals
- High-frequency elastic moduli of two-dimensional Yukawa fluids and solids
- Collective modes of two-dimensional classical Coulomb fluids
- The role of attraction in the phase diagrams and melting scenarios of generalized 2D Lennard-Jones systems
- Unified description of sound velocities in strongly coupled Yukawa systems of different spatial dimensionality
- Two-body entropy of two-dimensional fluids
- Note: Melting criterion for soft particle systems in two dimensions
- Bridge functions of classical one-component plasmas
- Vapor-liquid equilibrium and equation of state of two-dimensional fluids from a discrete perturbation theory
- Structure and thermodynamics of two dimensional Yukawa liquids
- Isothermal Equation of State of Three Dimensional Yukawa Gas
- Thermal conduction in two-dimensional complex plasma layers
- Calculation of Thermodynamic Characteristics and Sound Velocity for Two-Dimensional Yukawa Fluids Based on a Two-Step Approximation for the Radial Distribution Function
- Grüneisen parameter for strongly coupled Yukawa systems
- Vibrational model of entropy in dense two-dimensional fluids