  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.
