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Closed Access item Magnetoresistance in the paramagnetic insulating state of Pr0.50Ca0.50CoO3

Authors:Barón-González, A. J.
Frontera Beccaria, Carlos
García-Muñoz, J. L.
Blasco, Javier
Issue Date:2010
Publisher:Institute of Physics Publishing
Citation:Journal of Physics: Conference Series 200(1): 012010 (2010)
Abstract:We have studied the magnetic and magnetotransport properties of Pr0.50Ca0.50CoO3 (prepared using high pressure routes). We find that below the metal-insulator and spin state transition (MIT), the system can be described as a paramagnetic insulator. In this regime, it presents a considerable negative magnetoresistance (20%-40%), while above MIT the magnetoresistance is negligible or even slightly positive. These results seem in contradiction with the spin state picture usually drawn for this system.
Identifiers:doi: 10.1088/1742-6596/200/1/012010
issn: 1742-6588
e-issn: 1742-6596
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(ICMA) Artículos

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