Phys. Rev. B 24, 7404–7407 (1981)Ioffe-Regel criterion and resistivity of metalsReceived 7 May 1981; published in the issue dated 15 December 1981 Resistivity saturation is a general phenomenon observed in metals whose electrons have short mean free paths. The approach to saturation can be described rather well by the parallel-resistor formula 1/ρ=1/ρideal+1/ρsat, where ρideal is calculated by the usual theory and ρsat represents a constant "shunt" resistor. In this work it is shown that the requirement of the minimum time between collisions (Ioffe-Regel criterion), incorporated in the distribution of free times, leads to the parallel-resistor formula. © 1981 The American Physical Society URL:
http://link.aps.org/doi/10.1103/PhysRevB.24.7404
DOI:
10.1103/PhysRevB.24.7404
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