Thickness dependence study of current-driven ferromagnetic resonance in Y3 Fe5 O12 /heavy metal bilayers
Accepted version
Peer-reviewed
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Repository DOI
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Authors
Mitra, A
Westerman, AL
Ali, M
Ciccarelli, C
Abstract
jats:pWe use ferromagnetic resonance to study the current-induced torques in YIG/heavy metal bilayers. YIG samples with thickness varying from 14.8 nm to 80 nm, with the Pt or Ta thin film on top, are measured by applying a microwave current into the heavy metals and measuring the longitudinal DC voltage generated by both spin rectification and spin pumping. From a symmetry analysis of the FMR lineshape and its dependence on YIG thickness, we deduce that the Oersted field dominates over spin-transfer torque in driving magnetization dynamics.</jats:p>
Description
Keywords
51 Physical Sciences, 5104 Condensed Matter Physics
Journal Title
Applied Physics Letters
Conference Name
Journal ISSN
0003-6951
1077-3118
1077-3118
Volume Title
110
Publisher
AIP Publishing
Publisher DOI
Sponsorship
European Commission (316657)
European Research Council (648613)
European Research Council (648613)