Entropy-Driven Reentrant Behavior in CMR Manganites
classification
❄️ cond-mat.str-el
keywords
manganitesreentrantbehaviorschargeentropy-driventemperatureaboveappear
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We discuss the origin of the reentrant behaviors of insulating states above the Curie temperature of the colossal magnetoresistance manganites. We consider a system where charge ordering and ferromagnetism compete with each other. In the presence of randomness which pins charge order fluctuations, entropy-driven reentrant behaviors will appear, which explains the typical temperature dependence of the resistivity for CMR manganites.
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