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Lattice Distortion, Polaron Conduction, and Jahn-Teller Effect on teh Magnetoresistance of La<sub>0.7</sub>Ca<sub>0.5</sub>CoO<sub>3</sub> Epitaxial Films

Lattice Distortion, Polaron Conduction, and Jahn-Teller Effect on teh Magnetoresistance of La<sub>0.7</sub>Ca<sub>0.5</sub>CoO<sub>3</sub> Epitaxial Films

Yeh, N. C.; Vasquez, R. P.; Beam, D. A.; Fu, C. C.; Huynh, H.; Beach, G.
URI: http://hdl.handle.net/2014/24641
Date: 1996

Abstract:

In summary, we have investigated the role of lattice distortion, polaron conduction and Jahn-Teller coupling in the occurrence of the colossal negative magnetoresistance in perovskite oxides. We conclude that larger lattice distortion gives rise to larger zero-field resistivity and larger magnitude of negative magnetoresistance.

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