# Mott-Ioffe-Regel limit and resistivity crossover in a tractable electron-phonon model

@article{Werman2016MottIoffeRegelLA, title={Mott-Ioffe-Regel limit and resistivity crossover in a tractable electron-phonon model}, author={Yochai Werman and Erez Berg}, journal={Physical Review B}, year={2016}, volume={93}, pages={075109} }

Many metals display resistivity saturation - a substantial decrease in the slope of the resistivity as a function of temperature, that occurs when the electron scattering rate $\tau^{-1}$ becomes comparable to the Fermi energy $E_F/\hbar$ (the Mott-Ioffe-Regel limit). At such temperatures, the usual description of a metal in terms of ballistically propagating quasiparticles is no longer valid. We present a tractable model of a large $N$ number of electronic bands coupled to $N^2$ optical phonon…

## 19 Citations

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Strange metal behavior refers to a linear temperature dependence of the electrical resistivity at temperatures below the Mott-Ioffe-Regel limit. It is seen in numerous strongly correlated electron…

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We present the results of electrical transport measurements of La$_{1.85}$Sr$_{0.15}$Cu$_{1-y}$Ni$_{y}$O$_{4}$ thin single-crystal films at magnetic fields up to 9 T. Adding Ni impurity with strong…

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We present a new framework for computing low frequency transport properties of strongly correlated, ergodic systems. Our main assumption is that, when a thermalizing diffusive system is driven at…

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Understanding transport of charge excitations in strongly correlated electron systems exhibiting the ``strange metal'' state without long-lived quasiparticle excitations has been a long-standing…

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