dorsal/arxiv
View SchemaFinite size effects in the dynamics and thermodynamics of 2D Coulomb clusters
| Authors | E. Yurtsever, F. Calvo, D. J. Wales |
|---|---|
| Categories | |
| ArXiv ID | physics/0511034 |
| URL | https://arxiv.org/abs/physics/0511034 |
| DOI | 10.1103/PhysRevE.72.026110 |
| Journal | Phys. Rev. E vol 72, p 026110 (2005) |
Abstract
The dynamics and thermodynamics of melting in two-dimensional Coulomb clusters is revisited using molecular dynamics and Monte Carlo simulations. Several parameters are considered, including the Lindemann index, the largest Lyapunov exponent and the diffusion constant. In addition to the orientational and radial melting processes, isomerizations and complex size effects are seen to occur in a very similar way to atomic and molecular clusters. The results are discussed in terms of the energy landscape represented through disconnectivity graphs, with proper attention paid to the broken ergodicity problems in simulations. Clusters bound by 1/r^3 and e^{-\kappa r}/r forces, and heterogeneous clusters made of singly- and doubly-charged species, are also studied, as well as the evolution toward larger systems.
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"abstract": "The dynamics and thermodynamics of melting in two-dimensional Coulomb\nclusters is revisited using molecular dynamics and Monte Carlo simulations.\nSeveral parameters are considered, including the Lindemann index, the largest\nLyapunov exponent and the diffusion constant. In addition to the orientational\nand radial melting processes, isomerizations and complex size effects are seen\nto occur in a very similar way to atomic and molecular clusters. The results\nare discussed in terms of the energy landscape represented through\ndisconnectivity graphs, with proper attention paid to the broken ergodicity\nproblems in simulations. Clusters bound by 1/r^3 and e^{-\\kappa r}/r forces,\nand heterogeneous clusters made of singly- and doubly-charged species, are also\nstudied, as well as the evolution toward larger systems.",
"arxiv_id": "physics/0511034",
"authors": [
"E. Yurtsever",
"F. Calvo",
"D. J. Wales"
],
"categories": [
"physics.atm-clus"
],
"doi": "10.1103/PhysRevE.72.026110",
"journal_ref": "Phys. Rev. E vol 72, p 026110 (2005)",
"title": "Finite size effects in the dynamics and thermodynamics of 2D Coulomb clusters",
"url": "https://arxiv.org/abs/physics/0511034"
},
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