Fluctuation-dissipation relation for giant magnetoresistive 1/fnoise
- 1 December 1993
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 48 (21) , 16156-16159
- https://doi.org/10.1103/physrevb.48.16156
Abstract
We find that Co/Cu multilayers exhibiting giant magnetoresistance (GMR) also show giant magnetoresistive 1/f noise. The largest component of this noise (which peaks at magnetic fields maximizing the GMR derivative) is accurately predicted from a fluctuation-dissipation relation using the out-of-phase GMR in an ac field. A second noise mechanism, connected with defects in the antiferromagnetic order but not related to overall magnetization fluctuations, was found near zero field.Keywords
This publication has 12 references indexed in Scilit:
- Conductivity and magnetoresistance of magnetic multilayered structuresPhysical Review B, 1992
- Giant magnetoresistance in antiferromagnetic Co/Cu multilayersApplied Physics Letters, 1991
- Oscillatory interlayer coupling and giant magnetoresistance in Co/Cu multilayersJournal of Magnetism and Magnetic Materials, 1991
- Oscillations in exchange coupling and magnetoresistance in metallic superlattice structures: Co/Ru, Co/Cr, and Fe/CrPhysical Review Letters, 1990
- Magnetic resonance determination of the antiferromagnetic coupling of Fe layers through CrPhysical Review Letters, 1989
- Enhanced magnetoresistance in layered magnetic structures with antiferromagnetic interlayer exchangePhysical Review B, 1989
- Giant Magnetoresistance of (001)Fe/(001)Cr Magnetic SuperlatticesPhysical Review Letters, 1988
- noise and other slow, nonexponential kinetics in condensed matterReviews of Modern Physics, 1988
- Layered Magnetic Structures: Evidence for Antiferromagnetic Coupling of Fe Layers across Cr InterlayersPhysical Review Letters, 1986
- Irreversibility and Generalized NoisePhysical Review B, 1951