S. Brazovskii, P. Monceau and N. Kirova
J. Phys. IV France 131 (2005) 247-250
Fate of the Wigner crystal on the square latticeD. 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