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arXiv · 0910.2744

Surface spin flip probability of mesoscopic Ag wires

G. Mihajlovic·J. E. Pearson·S. D. Bader·A. Hoffmann
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Abstract

Spin relaxation in mesoscopic Ag wires in the diffusive transport regime is studied via nonlocal spin valve and Hanle effect measurements performed on permalloy/Ag lateral spin valves. The ratio between momentum and spin relaxation times is not constant at low temperatures. This can be explained with the Elliott-Yafet spin relaxation mechanism by considering the momentum surface relaxation time as being temperature dependent. We present a model to separately determine spin flip probabilities for phonon, impurity and surface scattering and find that the spin flip probability is highest for surface scattering.

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G. Mihajlovic, J. E. Pearson, S. D. Bader, A. Hoffmann. 2010-02-17. Surface spin flip probability of mesoscopic Ag wires. https://doi.org/10.1103/physrevlett.104.237202

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