Non-linear effects and Joule heating in I-V curves in manganites

Abstract

We study the influence of the Joule effect on the non-linear behavior of the transport I-V curves in polycrystalline samples of the manganite Pr0.8Ca0.2MnO3 by using the crystalline unit cell parameters as an internal thermometer in X-ray and neutron diffraction. We develop a simple analytical model to estimate the temperature profile in the samples. Under the actual experimental conditions we show that the internal temperature gradient or the difference between the temperature of the sample and that of the thermal bath are at the origin of the non-linearity observed in the I-V curves. Consequences on other compounds with colossal magnetoresistance are also discussed.

accepted in Journal of Applied Physics

References in corpus (8)

• Resistivity of Mixed-Phase Manganites
• Non-linear conduction in charge-ordered Pr${}_{0.63}$ Ca${}_{0.37}$ MnO${}_3$ : Effect of magnetic fields
• Non-linear electrical response in a non-charge-ordered manganite: Pr0.8Ca0.2MnO3
• Microphase separation in Pr0.67Ca0.33MnO3 by small angle neutron scattering
• Current-induced metallic behavior in Pr${}_{0.5}$Ca${}_{0.5}$MnO${}_3$ thin films: competition between Joule heating and nonlinear conduction mechanism
• Magnetic Field resulting from non-linear electrical transport in single crystals of charge-ordered Pr${}_{0.63}$ Ca${}_{0.37}$ MnO${}_3$}
• Normal-state conductivity in underdoped La_{2-x}Sr_xCuO_4 thin films: Search for nonlinear effects related to collective stripe motion
• Non-linear electrical conduction and broadband noise in charge-ordered rare earth manganate Nd_0.5Ca_0.5MnO_3

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• High bias anomaly in YBa2Cu3O7/LaMnO_{3+delta}/YBa2Cu3O7 Superconductor/Ferromagnetic Insulator/Superconductor junctions: Evidence for a long-range superconducting proximity effect through the conduction band of a ferromagnetic insulator
• The electrical current effect in phase separated La5/8-yPryCa3/8MnO3: Charge order melting vs. Joule heating
• Evidences of a consolute critical point in the Phase Separation regime of La(5/8-y)Pr(y)Ca(3/8)MnO(3) (y = 0.4) single crystals
• Robust charge stripe order under high electric fields in Nd1.67Sr0.33NiO4
• Multivalued memory effects in electronic phase-change manganites controlled by Joule heating
• Electric Field Induced Collapse of Charge-Ordered Phase in Manganites
• Electrical transport and glassy response in strained thin La0.7Ca0.3MnO3 films
• Scaling of NonOhmic Conduction in Strongly Correlated Systems
• Thermal cycling memory in phase separated manganites
• Controlling thermal cycling effect in phase separated manganites with high temperature thermal treatments