Abstract
Non-linear conduction in a CO manganese oxide Pr 0.63Ca 0.37MnO 3 is reported. This kind of behavior is usually interpreted as a current-induced breakdown of the CO state. We propose in this report to compare this feature of the coexistence of localized and delocalized electron states with what occurs in the Charge Density Waves systems in which the same non-linearity is observed. In such a framework the non-linear conduction arises from the motion of the CDW condensate which carries a net electrical current.
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