Bound states in the phase diagram of the extended Hubbard model

Details Bound states in the phase diagram of the extended Hubbard model Bound states in the phase diagram of the extended Hubbard model

2004-12-22

arxiv.org/abs/cond-mat/0412627v1

Physics

Condensed Matter

Superconductivity

4 pages, 2 figures. Accepted for publication in physica status solidi (b) (C) (2004) WILEY-VCH Verlag GmbH & Co. KGaA, Weinhei

Scientific paper

10.1002/pssb.200460049

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.

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