Bound states in the phase diagram of the extended Hubbard model
Abstract
Description
The papaer shows how the known, exact results for the two electron bound states can modify the ground state phase diagram of extended Hubbard model (EHM) for on-site attraction, intersite repulsion and arbitrary electron density. The main result is suppression of the superconducting state in favor of normal phase for small charge densities.
4 pages, 2 figures. Accepted for publication in physica status solidi (b) (C) (2004) WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
4 pages, 2 figures. Accepted for publication in physica status solidi (b) (C) (2004) WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim