Ferromagnetic resonance spin pumping in CoFeB with highly resistive non-magnetic electrodes
arXiv:1404.1993 · doi:10.1016/j.cap.2014.07.013
Abstract
The relative contribution of spin pumping and spin rectification from the ferromagnetic resonance of CoFeB/non-magnetic bilayers was investigated as a function of non-magnetic electrode resistance. Samples with highly resistive electrodes of Ta or Ti exhibit a stronger spin rectification signal, which may result in over-(or under-)estimation of the spin Hall angle of the materials, while those with low resistive electrodes of Pt or Pd show the domination of the inverse spin Hall effect from spin pumping. By comparison with samples of single FM layer and an inverted structure, we provide a proper analysis method to extract spin pumping contribution.
arXiv comment10 pages, 4 figures
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Cited by in corpus (6)
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- CoFeB/MgO/CoFeB structures with orthogonal easy axes: perpendicular anisotropy and damping
- Thermoelectric Signal Enhancement by Reconciling the Spin Seebeck and Anomalous Nernst Effects in Ferromagnet/Non-magnet Multilayers
- Enhanced spin-orbit torque via interface engineering in Pt/CoFeB/MgO heterostructures