Surface spin flip probability of mesoscopic Ag wires

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.

5 pages, 4 figures

References in corpus (4)

• Direct electronic measurement of the spin Hall effect
• Negative nonlocal resistance in mesoscopic gold Hall bars: Absence of giant spin Hall effect
• Control of spin injection by direct current in lateral spin valves
• Enhanced spin-flip scattering at the surface of copper in lateral spin valves

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• Effect of the interface resistance in non-local Hanle measurements
• Revealing the importance of interfaces for pure spin current transport
• Nanomechanical detection of the spin Hall effect
• Unusual Scaling of Kondo Spin Relaxation
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