Faculté des sciences

Fate of the Wigner crystal on the square lattice

Baeriswyl, Dionys ; Fratini, S.

In: Journal de Physique IV, 2005, vol. 131, p. 247-250

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. Plus

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    Summary
    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.