Tc suppression and resistivity in cuprates with out of plane defects

Details Tc suppression and resistivity in cuprates with out of plane defects Tc suppression and resistivity in cuprates with out of plane defects

2007-03-24

arxiv.org/abs/cond-mat/0703635v2

Phys. Rev. B 76, 054516 (2007)

Physics

Condensed Matter

Superconductivity

6 pages, 5 figures

Scientific paper

10.1103/PhysRevB.76.054516

Recent experiments introducing controlled disorder into optimally doped cuprate superconductors by both electron irradiation and chemical substitution have found unusual behavior in the rate of suppression of the critical temperature Tc vs. increase in residual resistivity. We show here that the unexpected discovery that the rate of Tc suppression vs. resistivity is stronger for out-of-plane than for in-plane impurities may be explained by consistent calculation of both Tc and resistivity if the potential scattering is assumed to be nearly forward in nature. For realistic models of impurity potentials, we further show that significant deviations from the universal Abrikosov-Gor'kov Tc suppression behavior may be expected for out of plane impurities.

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