Impurity Scattering from $δ$-layers in Giant Magnetoresistance Systems

Details Impurity Scattering from $δ$-layers in Giant Magnetoresistance Systems Impurity Scattering from $δ$-layers in Giant Magnetoresistance Systems

2000-05-03

arxiv.org/abs/cond-mat/0005073v2

Physics

Condensed Matter

5 pages, 2 figures

Scientific paper

10.1103/PhysRevB.63.220405

The properties of the archetypal Co/Cu giant magnetoresistance (GMR) spin-valve structure have been modified by the insertion of very thin (sub-monolayer) $\delta$-layers of various elements at different points within the Co layers, and at the Co/Cu interface. Different effects are observed depending on the nature of the impurity, its position within the periodic table, and its location within the spin-valve. The GMR can be strongly enhanced or suppressed for various specific combinations of these parameters, giving insight into the microscopic mechanisms giving rise to the GMR.

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