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Detection of the dc inverse spin Hall effect due to spin pumping in a novel meander-stripline geometry

Published

Author(s)

Thomas J. Silva, Mathias A. Weiler, Hans T. Nembach, Justin M. Shaw

Abstract

The dc voltage obtained from the inverse spin Hall effect (iSHE) due to spin pumping in ferromagnet/normal-metal (NM) bilayers can be unintentionally superimposed with magnetoresistive rectification of ac charge currents in the ferromagnetic layer. We introduce a geometry in which these spurious rectification voltages vanish while the iSHE voltage is maximized. In this geometry, a quantitative study of the dc iSHE is performed in a broad frequency range for Permalloy/NM multilayers with NM={Pt, Ta, Cu/Au, Cu/Pt}. The experimentally recorded voltages can be fully ascribed to the iSHE due to spin pumping. Furthermore we measure a small iSHE voltage in single CoFe thin films.
Citation
IEEE Magnetics Letters

Keywords

Microwave magnetics, spin pumping, spin rectification, inverse spin Hall effect

Citation

Silva, T. , Weiler, M. , Nembach, H. and Shaw, J. (2014), Detection of the dc inverse spin Hall effect due to spin pumping in a novel meander-stripline geometry, IEEE Magnetics Letters, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=917120 (Accessed April 18, 2021)
Created September 4, 2014, Updated February 19, 2017