Influence of the lattice symmetry on melting of the bilayer Wigner crystal
Faculty of Sciences. Physics
Journal de physique: 4. - Les Ulis, 1991 - 2006
International Conference on Strongly Coupled Coulomb Systems, SEP 04-10, 1999, ST MALO, FRANCE
, p. 117-120
University of Antwerp
The melting transition of the five different lattices of a bilayer crystal is studied using the Monte-Carlo (MC) technique. We found the surprising result that the square lattice has a substantial larger melting temperature as compared to the other lattice structures, which is a consequence of the specific topology of the temperature induced defects. A new melting criterion is formulated which we show to be universal for bilayers as well as for single layer crystals.