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Abstract: We investigated Co-Cu lateral spin valves by means of high-resolutiontransmission soft x-ray microscopy with magnetic contrast that utilizes x-raymagnetic circular dichroism XMCD. No magnetic XMCD contrast was observed atthe Cu L$ 3$ absorption edge, which should directly image the spin accumulationin Cu. Although electrical transport measurements in a non-local geometryclearly detected the spin accumulation in Cu, which remained unchanged duringillumination with circular polarized x-rays at the Co and Cu L$ 3$ absorptionedges.



Author: O. Mosendz, G. Mihailovic, J. E. Pearson, P. Fischer, M.-Y. Im, S. D. Bader, A. Hoffmann

Source: https://arxiv.org/



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