Orange Peel coupling in granular ferromagnetic films
arXiv:cond-mat/0307274 · doi:10.1103/PhysRevB.72.012413
Abstract
We present magnetoresistance (MR) measurements performed on magnetic tunnel junctions in which one of the electrodes is a granular ferromagnetic film. These junctions exhibit a zero field resistance dip. The dip magnitude depends on the size of the grains. We interpret these results as a consequence of the orange peel effect between the continuous ferromagnetic film and the magnetic grains. The coupling is found to be much stronger than that between continuous ferromagnetic layers.
arXiv comment4 pages and 3 figures