Loughborough University
Leicestershire, UK
LE11 3TU
+44 (0)1509 263171
Loughborough University

Loughborough University Institutional Repository

Please use this identifier to cite or link to this item: https://dspace.lboro.ac.uk/2134/12768

Title: Generic properties of a quasi-one-dimensional classical Wigner crystal
Authors: Piacente, G.
Schweigert, I.V.
Betouras, Joseph J.
Peeters, F.M.
Issue Date: 2004
Publisher: © The American Physical Society
Citation: PIACENTE, G. ... et al, 2004. Generic properties of a quasi-one-dimensional classical Wigner crystal. Physical Review B, 69 (45324), 17pp.
Abstract: We studied the structural, dynamical properties and melting of a quasi-one-dimensional system of charged particles, interacting through a screened Coulomb potential. The ground-state energy was calculated and, depending on the density and the screening length, the system crystallizes in a number of chains. As a function of the density (or the confining potential), the ground state configurations and the structural transitions between them were analyzed both by analytical and Monte Carlo calculations. The system exhibits a rich phase diagram at zero temperature with continuous and discontinuous structural transitions. We calculated the normal modes of the Wigner crystal and the magnetophonons when an external constant magnetic field B is applied. At finite temperature the melting of the system was studied via Monte Carlo simulations using the modified Lindemann criterion (MLC). The melting temperature as a function of the density was obtained for different screening parameters. Reentrant melting as a function of the density was found as well as evidence of directional dependent melting. The single-chain regime exhibits anomalous melting temperatures according to the MLC and as a check we study the pair-correlation function at different densities and different temperatures, which allowed us to formulate a different melting criterion. Possible connection with recent theoretical and experimental results are discussed and experiments are proposed.
Version: Published
DOI: 10.1103/PhysRevB.69.045324
URI: https://dspace.lboro.ac.uk/2134/12768
Publisher Link: http://dx.doi.org/10.1103/PhysRevB.69.045324
ISSN: 0163-1829
Appears in Collections:Published Articles (Physics)

Files associated with this item:

File Description SizeFormat
e0453240.pdf265.42 kBAdobe PDFView/Open


SFX Query

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.