Electrical transport and glassy response in strained thin La0.7Ca0.3MnO3 films

Details Electrical transport and glassy response in strained thin La0.7Ca0.3MnO3 films Electrical transport and glassy response in strained thin La0.7Ca0.3MnO3 films

2005-09-14

arxiv.org/abs/cond-mat/0509383v1

Physics

Condensed Matter

Strongly Correlated Electrons

25 pages, 6 figures, to be published PRB

Scientific paper

10.1103/PhysRevB.72.134414

Magnetotransport properties of La0.7Ca0.3MnO3 thin films deposited on (100) LaAlO3 substrate were investigated. The balance between the charge ordered insulating phase and ferromagnetic metallic phase may account for a number of glassy features such as: significant hysteresis, memory effects and long-time resistivity relaxation. It was found that the resistance of La0.7Ca0.3MnO3 thin film decreases significantly upon applying electric current, in a wide temperature range 10 - 220 K. The magnetotransport properties of the strained thin films are discussed in the context of cross-coupling of charge, spin and strain.

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