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

Abstract

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.

Preprint generated using RevTeX4. 3 Figures

References in corpus (3)

• Non-linear electrical conduction and broadband noise in charge-ordered rare earth manganate Nd_0.5Ca_0.5MnO_3
• Pulsed versus DC I-V characteristics of resistive manganites
• Colossal electroresistance in ferromagnetic insulating state of single crystal Nd${}_0.7$Pb${}_0.3$MnO${}_3$

Cited by in corpus (5)

• Nonlinear conductivity of two-dimensional Coulomb glasses
• Electric field driven destabilization of the insulating state in nominally pure LaMnO3
• Non-Gaussian resistance noise in the ferromagnetic insulating state of a hole doped manganite
• Voltage bias induced modification of all oxide Pr0.5Ca0.5MnO3/SrTi0.95Nb.05O3 junctions
• Variable range hopping in a non-equilibrium steady state