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Heavy fermion d-wave superconductivity: a X-boson approach

Lizardo H. C. M. Nunes, M. S. Figueira, E. V. L. de Melllo

cond-mat.supr-conarXiv:cond-mat/0311118

Abstract

From an extension of the periodic Anderson model (PAM) in the U=∞ limit taking into account the effect of a nearest neighbor attractive interaction between f -electrons, we compare the obtained superconducting phase diagram of a two dimensional d-wave superconductor with the results obtained for an isotropic s-wave superconductor employing the X-boson method.

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