Tc and deltao in a phenomenological ''pseudogap'' model

AUTOR(ES)

Romero, D., Sánchez, L., Rodríguez-Núñez, J. J., Beck, H.

FONTE

Brazilian Journal of Physics

DATA DE PUBLICAÇÃO

2003-12

RESUMO

We study numerically superconductivity in a system characterized by the presence of a phenomenological ”pseudogap”, Eg, in the energy spectrum, for 0 < T < Ts.T* is a crossover temperature. As a simplification, the pseudogap and the superconducting gap have the same s-wave symmetry. We find that for"Eg ¹ 0 we require a critical value of the superconducting interaction, Vd, to produce a finite superconducting critical temperature, Tc and another one for deltao ¹ 0.

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