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Violation of Ioffe-Regel condition but saturation of resistivity of the high Tc cuprates

M. Calandra·O. Gunnarsson
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Abstract

We demonstrate that the resistivity data of a number of high Tc cuprates, in particular La(2-x)SrxCuO4, are consistent with resistivity saturation, although the Ioffe-Regel condition is strongly violated. By using the f-sum rule together with calculations of the kinetic energy in the t-J model, we show that the saturation resistivity is unusually large. This is related to the strong reduction of the kinetic energy due to strong correlation effects. The fulfilment of the Ioffe-Regel condition for conventional transition metal compounds is found to be somewhat accidental.

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M. Calandra, O. Gunnarsson. 2002-10-24. Violation of Ioffe-Regel condition but saturation of resistivity of the high Tc cuprates. https://doi.org/10.1209/epl%2Fi2003-00253-5

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