Abstract
Magnetic circular x-ray dichroism measurements on Co/Cu and Fe/Cu multilayers at the K edge of copper show that the 4p-states of copper are significantly spin-polarized by the adjacent magnetic layers. In relation to the phase opposition of the copper thickness-dependent magnetoresistance of Co/Cu and Fe/Cu multilayers it is of prime importance to notice that the polarization of the conduction electrons of copper follows specifically the polarization of the conduction electrons of the adjacent magnetic element.
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Pizzini, S., Giorgetti, C., Fontaine, A. et al. Evidence for Spin Polarization of Metallic Copper in Co/Cu and Fe/Cu Multilayers. MRS Online Proceedings Library 313, 625–630 (1993). https://doi.org/10.1557/PROC-313-625
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DOI: https://doi.org/10.1557/PROC-313-625