Origin of resistivity minima at low temperature in ferromagnetic metallic manganites

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dc.creatorSagdeo, P. R.
dc.creatorChoudhary, R. J.
dc.creatorPhase, D. M.
dc.date2008-04-26
dc.date.accessioned2026-07-07T09:35:31Z
dc.date.available2026-07-07T09:35:31Z
dc.descriptionThe resistivity and magnetoresistance measurements were carried out on thin film of La0.7Ca0.3MnO3 to investigate the possible origin of low temperature resistivity minimum observed in these samples. We observed large hysteresis in the magnetoresistance at low temperature; 5K and the sample current I has large effect on resistivity minima temperature. The observation of hysteresis at low temperatures suggests the presence of inhomogeneity at low temperatures. These in-homogeneities consist of regions of different resistive phases. It appears that the high resistive phase prevents the tunneling of charge carriers between two low resistive regions and thus giving rise to the resistivity minimum in these samples.
dc.descriptionFigure-3 and figure-4 are important new results
dc.identifierhttps://arxiv.org/abs/0804.4247
dc.identifierhttp://arxiv.org/abs/0804.4247
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/159858
dc.subjectStrongly Correlated Electrons
dc.subjectMaterials Science
dc.titleOrigin of resistivity minima at low temperature in ferromagnetic metallic manganites
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