Volume 3, Issue 1 pp. 61-64
Original Paper

Electrical transport in strained La0.7Ca0.3MnO3 films

V. Markovich

V. Markovich

Department of Physics, Ben-Gurion University of the Negev, P.O. Box 653, 84105 Beer-Sheva, Israel

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E. S. Vlakhov

Corresponding Author

E. S. Vlakhov

Institute of Solid State Physics, BAS, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

Int. Laboratory for High Magnetic Fields and Low Temperatures, 95 Gajowicka, 53 421 Wroclaw, Poland

Phone: +359 27144413, Fax: +35929753632Search for more papers by this author
Y. Yuzhelevskii

Y. Yuzhelevskii

Department of Physics, Ben-Gurion University of the Negev, P.O. Box 653, 84105 Beer-Sheva, Israel

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L. B. Blagoev

L. B. Blagoev

Institute of Electronics, BAS, 72 Tzarigradsko Chaussee Blvd., 1784 Sofia, Bulgaria

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K. A. Nenkov

K. A. Nenkov

Int. Laboratory for High Magnetic Fields and Low Temperatures, 95 Gajowicka, 53 421 Wroclaw, Poland

Institut für Festkörper- und Werkstofforschung Dresden, P.O. Box 270016, 01171, Dresden, Germany

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G. Gorodetsky

G. Gorodetsky

Department of Physics, Ben-Gurion University of the Negev, P.O. Box 653, 84105 Beer-Sheva, Israel

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First published: 02 January 2006
Citations: 1

Abstract

Magnetotransport properties of La0.7Ca0.3MnO3 thin films deposited on (100) LaAlO3 substrate were investigated. Fine balance between the charge ordered insulating phase and ferromagnetic metallic phase results in a number of glassy features such as: significant hysteresis, memory effects and long-time resistivity relaxation at turning on and off of magnetic field. It was found that in the temperature range 10–220 K the resistance of thin film decreases significantly upon applying electric current and this effect cannot be explained by homogeneous Joule heating. The magnetotransport properties of the thin films are discussed in the frame of cross-coupling of charge, spin and strain. (© 2006 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim)

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