Impurities and Conductivity in a D-wave Superconductor

Details Impurities and Conductivity in a D-wave Superconductor Impurities and Conductivity in a D-wave Superconductor

1994-01-20

arxiv.org/abs/cond-mat/9401042v1

Physics

Condensed Matter

6 pages , Revtex 3, Los Alamos Preprint LA-UR-94-96

Scientific paper

Impurity scattering in the unitary limit produces low energy quasiparticles with anisotropic spectrum in a two-dimensional $d$-wave superconductor. We describe a new {\em quasi-one-dimensional } limit of the quasiparticle scattering, which might occur in a superconductor with short coherence length and with {\em finite} impurity potential range. The dc conductivity in a $d$-wave superconductor is predicted to be proportional to the normal state scattering rate and is impurity-{\em dependent}. We show that {\em quasi-one-dimensional } regime might occur in high-$T_c$ superconductors with Zn impurities at low temp\ eratures $T\lesssim 10$~K

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