Mesoscopic Thermodynamics of an Inhomogeneous Colossal-Magnetoresistive Phase

Autor:	Yoshinori Tokura, Edmund R. Nowak, R. D. Merithew, James N. Eckstein, F. M. Hess, P. Spradling, M. B. Weissman, Y. Tomioka, J. O'Donnell
Rok vydání:	2000
Předmět:	Condensed Matter::Materials Science Mesoscopic physics symbols.namesake Materials science Magnetic moment Magnetoresistance Condensed matter physics Boltzmann constant symbols General Physics and Astronomy Conductivity Manganite
Zdroj:	Physical Review Letters. 84:3442-3445
ISSN:	1079-7114 0031-9007
DOI:	10.1103/physrevlett.84.3442
Popis:	Equilibrium conductivity fluctuations of mesoscopic domains are found in film and bulk single-crystal manganite colossal magnetoresistive material. Temperature and field dependences of the Boltzmann factors for a collection of two-state fluctuators give measures of the magnetic moment and entropy differences between the states, and of the fluctuator volumes. The large resistance step size implies dramatic current inhomogeneities. Occasional anomalous temperature dependences indicate that the film inhomogeneous phase is stabilized by a repulsive interaction between conducting regions.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::c276b9a1f38a5e9f8d091b1fae2bdee4 https://doi.org/10.1103/physrevlett.84.3442 Zobrazit plný text záznamu