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Non-linear electrical conduction and broadband noise in charge-ordered rare earth manganate Nd_0.5Ca_0.5MnO_3

Ayan Guha·Arindam Ghosh·A. K. Raychaudhuri·S. Parashar·A. R. Raju·C. N. R. Rao
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Abstract

Measurements of the dc transport properties and the low-frequency conductivity noise in films of charge ordered Nd_0.5Ca_0.5MnO_3 grown on Si subtrate reveal the existence of a threshold field in the charge ordered regime beyond which strong non linear conduction sets in along with a large broad band conductivity noise. Threshold-dependent conduction disappears as T -> T_{CO}, the charge ordering temperature. This observation suggests that the charge ordered state gets depinned at the onset of the non-linear conduction.

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Ayan Guha, Arindam Ghosh, A. K. Raychaudhuri, S. Parashar, A. R. Raju, C. N. R. Rao. 1999-07-24. Non-linear electrical conduction and broadband noise in charge-ordered rare earth manganate Nd_0.5Ca_0.5MnO_3. https://doi.org/10.1063/1.125358

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