Saturation of electrical resistivity

Details Saturation of electrical resistivity Saturation of electrical resistivity

2003-05-17

arxiv.org/abs/cond-mat/0305412v1

Rev. Mod. Phys. 75, 1085 (2003)

Physics

Condensed Matter

Strongly Correlated Electrons

16 pages, RevTeX, 15 eps figures, additional material available at http://www.mpi-stuttgart.mpg.de/andersen/saturation/

Scientific paper

10.1103/RevModPhys.75.1085

Resistivity saturation is observed in many metallic systems with a large resistivity, i.e., when the resistivity has reached a critical value, its further increase with temperature is substantially reduced. This typically happens when the apparent mean free path is comparable to the interatomic separations - the Ioffe-Regel condition. Recently, several exceptions to this rule have been found. Here, we review experimental results and early theories of resistivity saturation. We then describe more recent theoretical work, addressing cases both where the Ioffe-Regel condition is satisfied and where it is violated. In particular we show how the (semiclassical) Ioffe-Regel condition can be derived quantum-mechanically under certain assumptions about the system and why these assumptions are violated for high-Tc cuprates and alkali-doped fullerides.

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