Anzeige
Erschienen in:
01.03.2015
Local magnetic properties of \(L\times L\) square lattice with an Extended Hubbard Model
Erschienen in: Optical and Quantum Electronics | Ausgabe 3/2015
EinloggenAktivieren Sie unsere intelligente Suche, um passende Fachinhalte oder Patente zu finden.
Wählen Sie Textabschnitte aus um mit Künstlicher Intelligenz passenden Patente zu finden. powered by
Markieren Sie Textabschnitte, um KI-gestützt weitere passende Inhalte zu finden. powered by
Abstract
Within an analytical diagonalization, it is possible to exactly solve a large class of models useful for the study of strongly correlated electrons systems. Here, we perform an exact diagonalization of the two-dimensional Extended Hubbard Model with first nearest neighbor repulsive \(V\) and spin-spin interaction \(J\) at one-eight filling. The analysis of the ground state energy and spin gap behaviors as a function of \(V\) and \(J\) terms allows us to study some local magnetic properties of \(2D\) ferromagnetic correlated electrons system distributed in finite square lattice. The obtained results show the existence of competition between Spin Density Wave and Charge Density Wave with the possibility to have a phase transition between these two waves at a critical value \(V_{c}\)