Effect of Disorder on a D–wave Superconductor
نویسنده
چکیده
We apply the Coherent Potential Approximation (CPA) to an extended Hubbard model to describe disordered superconductors with d–wave pairing. We discuss the pair–breaking effect caused by non– magnetic disorder in presence of Van Hove singularity.
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Two decades ago the epoch making discovery of high Tc cuprate superconductivity by Bednorz and Müller shocked the world’s superconductivity community. However, already in 1979 and 1980, the first heavy fermion superconductor CeCu2Si2 and organic superconductor (TMTSF)2PF6 have been discovered respectively. Also we know now that all these superconductors are unconventional and nodal. Further t...
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