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Abstract:
We report the results of a study of the in-plane and out-of-plane
resistivity of the layered perovskite superconductor Sr2RuO4 at
temperatures between 4 and 1300 K. Although the material is a very good
metal at low temperatures, with in-plane mean free paths (l) of
thousands of lattice spacings, l falls smoothly to less than 1 Angstrom
at 1300 K with no sign of resistivity saturation at the Mott-Ioffe-Regel
limit. Measurements of the incoherent out-of-plane resistivity over the
same range of temperature are also discussed. [S0163-1829(98)50840-5].
