Hot electron effects and non-linear transport in hole doped manganites

Details Hot electron effects and non-linear transport in hole doped manganites Hot electron effects and non-linear transport in hole doped manganites

2008-04-29

arxiv.org/abs/0804.4646v1

Physics

Condensed Matter

Strongly Correlated Electrons

Preprint generated using RevTeX4. 3 Figures

Scientific paper

10.1063/1.3020691

We show that strong non--linear electron transport in the ferromagnetic insulating (FMI) state of manganites, responsible for phenomena such as colossal electroresistance and current induced resistance switching, can occur due to a hot electron effect. In the FMI state, which we show is an insulator with a Coulomb gap, the temperature of the electron and lattice baths can decouple at high input power levels, leading to heating of the electron bath. Parameters of the hot electron effect model were independently determined via time dependence experiments and are in good agreement with the experimental values.

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