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

Preprint

24 July 1999

preprint
Published by arXiv in arXiv

https://doi.org/10.48550/arXiv.cond-mat/9907376

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.

Keywords

CONDUCTIVITY NOISE
ND_0.5CA_0.5MNO_3
LINEAR ELECTRICAL
BROADBAND NOISE
CHARGE ORDERED
CONDUCTION
RARE EARTH
MANGANATE
NOISE

All Related Versions

Version 1, 1999-07-24, ArXiv
Published version: Applied Physics Letters, 75 (21), 3381.

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