J. Phys. IV France
Volume 131, December 2005
Page(s) 247 - 250
Publié en ligne 18 janvier 2006
International Workshop on Electronic Crystals
S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 247-250

DOI: 10.1051/jp4:2005131062

Fate of the Wigner crystal on the square lattice

D. Baeriswyl1 and S. Fratini2

1  Department of Physics, University of Fribourg, Chemin du Musée 3, 1700 Fribourg, Switzerland
2  LEPES-CNRS, 25 avenue des Martyrs, 38042 Grenoble Cedex 9, France

The phase diagram of a system of electrons hopping on a square lattice and interacting through long-range Coulomb forces is studied as a function of density and interaction strength. The presence of a lattice strongly enhances the stability of the Wigner crystal phase as compared to the case of the two-dimensional electron gas.

© EDP Sciences 2005