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Quasiparticle-quasiparticle Scattering in High Tc Superconductors

M. B. Walker, M. F. Smith

cond-mat.supr-conarXiv:cond-mat/9910171

Abstract

The quasiparticle lifetime and the related transport relaxation times are the fundamental quantities which must be known in order to obtain a description of the transport properties of the high Tc superconductors. Studies of these quantities have been undertaken previously for the d-wave, high Tc superconductors for the case of temperature-independent elastic impurity scattering. However, much less is known about the temperature-dependent inelastic scattering. Here we give a detailed description of the characteristics of the temperature-dependent quasiparticle-quasiparticle scattering in d-wave superconductors, and find that this process gives a natural explanation of the rapid variation with temperature of the electrical transport relaxation rate.

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