Positive giant magnetoresistance in a Fe3O4/SrTiO3/La0.7Sr 0.3MnO3 heterostructure
Publication Type
Journal Article
Authors
Ghosh, K, S.B Ogale, S.P Pai, M Robson, E Li, I Jin, Z.-W Dong, R.L Greene, Ramamoorthy Ramesh, T Venkatesan, M Johnson
DOI
Abstract
A very large positive magnetoresistance (MR) has been discovered in a Fe3O4/SrTiO3/ La0.7Sr0.3MnO3 heterostructure for the transport perpendicular to the layer planes and applied magnetic field in the film plane. The observed MR features do not show any obvious correlation with the hysteresis behavior of the ferromagnetic bilayers. A possible explanation of these results is given in terms of the relative differences in the majority and minority spin bands of the two ferromagnetic layers and the field induced modifications of domain structures therein. © 1998 American Institute of Physics.
Journal
Applied Physics Letters
Volume
73
Year of Publication
1998
ISSN
00036951
Notes
cited By 115