Probability of metastable configurations in spherical three-dimensional Yukawa crystals
arXiv:0805.3016 · doi:10.1103/PhysRevE.78.036408
Abstract
Recently the occurrence probabilities of ground- and metastable states of three-dimensional Yukawa clusters with 27 and 31 particles have been analyzed in dusty plasma experiments [Block et al., Physics of Plasmas 15, 040701 (2008)]. There it was found that, in many cases, the ground state appeared substantially less frequently than excited states. Here we analyze this question theoretically by means of molecular dynamics (MD) and Monte Carlo simulations and an analytical method based on the canonical partition function. We confirm that metastable states can occur with a significantly higher probability than the ground state. The results strongly depend on the screening parameter of the Yukawa interaction and the damping coefficient used in the MD simulations. The analytical method allows one to gain insight into the mechanisms being responsible for the occurrence probabilities of metastable states in strongly correlated finite systems.
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Cited by in corpus (10)
- Simulating the dynamics of complex plasmas
- Structure and Phase transitions of Yukawa balls
- Resolving structural transitions in spherical dust clusters
- Collective excitations of a spherically confined Yukawa plasma
- Controlling strongly correlated dust clusters with lasers
- Spectral properties of spherically confined dusty plasma crystals
- Topological defect motifs in two-dimensional Coulomb clusters
- Configurational entropy of Wigner crystals
- Modeling fine particle (dusty) plasmas and charge-stabilized colloidal suspensions as inhomogeneous Yukawa systems
- Dimensional transitions in small Yukawa clusters