Physics – Condensed Matter – Superconductivity
Scientific paper
1998-06-30
Sol. State Commun. 108, 723 (1998)
Physics
Condensed Matter
Superconductivity
3 pages, RevTeX, 4 PostScript figures, submitted to Solid State Communications
Scientific paper
10.1016/S0038-1098(98)00460-8
Recent experimental data for the overdoped LSCO have firmly established the properties which characterize the transition between the superconducting and the Fermi liquid metallic phases. The thermodynamic response functions show a pronounced feature at this point, while the Fermi surface undergoes a dramatic change. By use of the Composite Operator Method for the two-dimensional Hubbard model, it is found that the presence of a van Hove singularity in the lower Hubbard band can explain these behaviors.
Avella Adolfo
Mancini Ferdinando
Villani Daniela
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