A model for correlated electrons in a lattice with local additional spin-1 degrees of freedom inducing constrained hopping is studied both in the low density limit and at quarter filling. We show that in both 1D and 2D two particles form a bound state even in the presence of a repulsive U

Phase Diagram of Correlated Electrons in a Lattice of Berry Phase Molecules / Santoro, Giuseppe Ernesto; Marco, Airoldi; Nicola, Manini; Erio, Tosatti; A., Parola. - In: PHYSICAL REVIEW LETTERS. - ISSN 0031-9007. - 74:20(1995), pp. 4039-4042. [10.1103/PhysRevLett.74.4039]

Phase Diagram of Correlated Electrons in a Lattice of Berry Phase Molecules

Santoro, Giuseppe Ernesto;
1995

Abstract

A model for correlated electrons in a lattice with local additional spin-1 degrees of freedom inducing constrained hopping is studied both in the low density limit and at quarter filling. We show that in both 1D and 2D two particles form a bound state even in the presence of a repulsive U
74
20
4039
4042
Santoro, Giuseppe Ernesto; Marco, Airoldi; Nicola, Manini; Erio, Tosatti; A., Parola
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Utilizza questo identificativo per citare o creare un link a questo documento: http://hdl.handle.net/20.500.11767/17328
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