Scaling behavior of the spin pumping effect in ferromagnet/platinum bilayers

We systematically measured the DC voltage V_ISH induced by spin pumping together with the inverse spin Hall effect in ferromagnet/platinum bilayer films. In all our samples, comprising ferromagnetic 3d transition metals, Heusler compounds, ferrite spinel oxides, and magnetic semiconductors, V_ISH in...

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Bibliographic Details
Published in:arXiv.org 2011-07
Main Authors: Czeschka, F D, Dreher, L, Brandt, M S, Weiler, M, Althammer, M, I -M Imort, Reiss, G, Thomas, A, Schoch, W, Limmer, W, Huebl, H, Gross, R, Goennenwein, S T B
Format: Article
Language:English
Subjects:
Bilayers
Carrier transport
Charge transport
Current carriers
Electromagnetism
Ferromagnetic materials
Hall effect
Magnetic properties
Magnetic semiconductors
Magnetism
Platinum
Polarity
Pumping
Transition metals
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Summary:We systematically measured the DC voltage V_ISH induced by spin pumping together with the inverse spin Hall effect in ferromagnet/platinum bilayer films. In all our samples, comprising ferromagnetic 3d transition metals, Heusler compounds, ferrite spinel oxides, and magnetic semiconductors, V_ISH invariably has the same polarity. V_ISH furthermore scales with the magnetization precession cone angle with a universal prefactor, irrespective of the magnetic properties, the charge carrier transport mechanism or type. These findings quantitatively corroborate the present theoretical understanding of spin pumping in combination with the inverse spin Hall effect.
ISSN:2331-8422
DOI:10.48550/arxiv.1012.3017