Enhanced inverse spin-Hall effect in ultrathin ferromagnetic/normal metal bilayers

Electrically detected ferromagnetic resonance is measured in microdevices patterned from ultra-thin Co/Pt bilayers. Spin pumping and rectification voltages are observed and distinguished via their angular dependence. The spin-pumping voltage shows an unexpected increase as the cobalt thickness is re...

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Bibliographic Details
Published in:Applied physics letters 2013-02, Vol.102 (7)
Main Authors: Skinner, T D, Kurebayashi, H, Fang, D, Heiss, D, Irvine, A C, Hindmarch, A T, Wang, M, Rushforth, A W, Ferguson, A J
Format: Article
Language:English
Subjects:
Charge
Cobalt
Conversion
Electric potential
Ferromagnetism
Inverse
Rectification
Voltage
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Summary:Electrically detected ferromagnetic resonance is measured in microdevices patterned from ultra-thin Co/Pt bilayers. Spin pumping and rectification voltages are observed and distinguished via their angular dependence. The spin-pumping voltage shows an unexpected increase as the cobalt thickness is reduced below 2 nm. This enhancement allows more efficient conversion of spin to charge current.
ISSN:0003-6951
1077-3118
DOI:10.1063/1.4792693