Appl. Phys. Lett. 80, 2144 (2002)
Michael Ziese
Abstract
Magnetization and magnetotransport properties of a discontinuous La0.7Ca0.3MnO3 film on LaAlO3 are presented. The sample shows transport characteristics of a granular ferromagnet with an extraordinarily large magnetoresistance. The data are successfully interpreted within a model of spin-dependent tunneling between grains taking into account magnetic intergrain correlation effects.
