Mooij Rule and Weak Localization

It has been shown that the observed correlation between the resistivity $ρ$ of high-resistive metallic alloys and the sign of the temperature derivative $dρ/dT$ can be explained by taking into account the weak localization. This correlation is known as Mooij rule: the derivative $dρ/dT$ is negative for alloys with resistivity in the range of $300\div150\,μΩ\cdot$cm, which corresponds to the electron mean free path about the interatomic distance; however, this derivative is positive for alloys with lower resistivity.

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