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- W2111673089 abstract "We report on the temperature dependence of resistivity in La0.7–xPrxPb0.3MnO3 (x =0, 0.5, 0.7) bulk samples in order to explore the hopping transport behavior with the Coulomb effects for the colossal magnetoresistance materials. The experimental observations in La0.7–xPrxPb0.3MnO3 (x =0.5, 0.7) bulk samples reveal the exponential temperature dependence of resistivity ϱ (T) ∞ exp [(T1/T)n ] with n = 1/2, when system was the paramagnetic (PM) insulator at the high temperature range (T>Tp). Evidence for the hopping conduction with Coulomb effects is presented By using the approximate method of the VRH conduction in the localization regime base on Efros and Shklovskii model [A. L. Efros and B. I. Shklovskii, J. Phys. C, Solid State Phys. 8, L49 (1975)], the localization length of eg electrons can be estimated with the relationship, ξ=2.8e2/(4πε0κkBT1). The reasonable results of localization length can be evaluated to explain the possibility of the presence of the Coulomb interactions in these CMR materials. (© 2007 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)" @default.
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- W2111673089 date "2007-12-01" @default.
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- W2111673089 title "Hopping conduction behavior with the Coulomb effects in colossal magnetoresistance materials" @default.
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- W2111673089 doi "https://doi.org/10.1002/pssb.200777337" @default.
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