Giant magnetoresistance in oxide-based metallic multilayers

The authors report on the first measurement of low-field giant magnetoresistance in metallic multilayers of perovskite oxides. The authors performed in-plane measurements of the magnetoelectric transport properties in La0.75Sr0.25MnO3/LaNiO3 trilayers and succeeded in distinguishing the giant magnetoresistance effect from other contributions to the total magnetoresistance. The samples were grown on single-crystalline SrTiO3 substrates by dc sputtering. (C) 2007 American Institute of Physics.