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arXiv · 0707.3762

Hanle Effect near Boundaries

Hans-Andreas Engel
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Abstract

The Hanle effect describes suppression of spin polarization due to precession in a magnetic field. This is a standard spintronics tool and it gives access to the spin lifetime of samples in which spins are generated homogeneously. We examine the Hanle effect when spins are generated at a boundary of a diffusive sample by the extrinsic spin Hall effect. We show that the Hanle curve is spatially dependent and that the "apparent" spin lifetime, given by its inverse half-width, is shorter near the boundary even if the spin relaxation rate is homogenous.

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Hans-Andreas Engel. 2007-07-25. Hanle Effect near Boundaries. https://doi.org/10.1103/physrevb.77.125302

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