Parameter-free expression for superconducting Tc in cuprates

Details Parameter-free expression for superconducting Tc in cuprates Parameter-free expression for superconducting Tc in cuprates

1999-03-04

arxiv.org/abs/cond-mat/9903071v1

Physics

Condensed Matter

Superconductivity

5 pages, 2 figures. Will be published in Physical Review B

Scientific paper

10.1103/PhysRevB.59.13628

A parameter-free expression for the superconducting critical temperature of layered cuprates is derived which allows us to express Tc in terms of experimentally measured parameters. It yields Tc values observed in about 30 lanthanum, yttrium and mercury-based samples for different levels of doping. This remarkable agreement with the experiment as well as the unusual critical behaviour and the normal-state gap indicate that many cuprates are close to the Bose-Einstein condensation regime.

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