A ferromagnetic solution for the 2D extended Hubbard model was found by means of a fully self-consistent approximation enforcing Pauli symmetry constraints. The magnetic phase diagram of the model, respect to the paramagnetic-ferromagnetic transition, was studied as function of the filling and the Coulomb interaction strength. The transition turns out to be the first order.
Ferromagnetic order for the 2D extended Hubbard model
AVELLA, Adolfo;MANCINI, Ferdinando;
2000-01-01
Abstract
A ferromagnetic solution for the 2D extended Hubbard model was found by means of a fully self-consistent approximation enforcing Pauli symmetry constraints. The magnetic phase diagram of the model, respect to the paramagnetic-ferromagnetic transition, was studied as function of the filling and the Coulomb interaction strength. The transition turns out to be the first order.File in questo prodotto:
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