Dispersion relations for the spin-motion angles in spin-polarized electron reflection

When spin-polarized electrons are reflected at a ferromagnetic surface, their spin-polarization vector exhibits a spin motion, comprised of an azimuthal precession and a polar rotation about the magnetization direction of the ferromagnetic material. It is shown that the angles of precession and of r...

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Bibliographic Details
Published in:Physical review. B 2016-01, Vol.93 (2), Article 024413
Main Authors: Bourzami, A., Bulou, H., Weber, W.
Format: Article
Language:English
Subjects:
Condensed matter
Dispersions
Ferromagnetic materials
Magnetization
Mathematical analysis
Precession
Reflection
Reflectivity
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Summary:When spin-polarized electrons are reflected at a ferromagnetic surface, their spin-polarization vector exhibits a spin motion, comprised of an azimuthal precession and a polar rotation about the magnetization direction of the ferromagnetic material. It is shown that the angles of precession and of rotation are intimately related by dispersion relations. Comparison with experimental data verifies their applicability. Particular attention has to be paid to the presence of complex zeros of the spin-dependent electron reflectivity.
ISSN:2469-9950
2469-9969
DOI:10.1103/PhysRevB.93.024413