Relative weight of the inverse spin-Hall and spin-rectification effects for metallic polycrystalline Py/Pt, epitaxial Fe/Pt, and insulating YIG/Pt bilayers: Angular dependent spin pumping measurements

Relative weight of the inverse spin-Hall and spin-rectification effects for metallic... We quantify and compare the relative weight of inverse spin-Hall and spin-rectification effects occurring in metallic polycrystalline (Py/Pt), epitaxial (Fe/Pt), and insulating (YIG/Pt) bilayers. To distinguish the spin rectification signal from the inverse spin-Hall voltage the external magnetic field is rotated in plane to take advantage of the different angular dependencies of the prevailing effects. We prove that in permalloy anisotropic magnetoresistance is the dominant source for spin rectification while in epitaxial iron the anomalous Hall effect has a comparable strength. The rectification in yttrium-iron-garnet/platinum bilayers reveals an angular dependence imitating the one seen for anisotropic magnetoresistance and anomalous Hall effect caused by spin-Hall magnetoresistance. http://www.deepdyve.com/assets/images/DeepDyve-Logo-lg.png Physical Review B American Physical Society (APS)

Relative weight of the inverse spin-Hall and spin-rectification effects for metallic polycrystalline Py/Pt, epitaxial Fe/Pt, and insulating YIG/Pt bilayers: Angular dependent spin pumping measurements

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Relative weight of the inverse spin-Hall and spin-rectification effects for metallic polycrystalline Py/Pt, epitaxial Fe/Pt, and insulating YIG/Pt bilayers: Angular dependent spin pumping measurements

Abstract

We quantify and compare the relative weight of inverse spin-Hall and spin-rectification effects occurring in metallic polycrystalline (Py/Pt), epitaxial (Fe/Pt), and insulating (YIG/Pt) bilayers. To distinguish the spin rectification signal from the inverse spin-Hall voltage the external magnetic field is rotated in plane to take advantage of the different angular dependencies of the prevailing effects. We prove that in permalloy anisotropic magnetoresistance is the dominant source for spin rectification while in epitaxial iron the anomalous Hall effect has a comparable strength. The rectification in yttrium-iron-garnet/platinum bilayers reveals an angular dependence imitating the one seen for anisotropic magnetoresistance and anomalous Hall effect caused by spin-Hall magnetoresistance.
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Publisher
American Physical Society (APS)
Copyright
Copyright © ©2017 American Physical Society
ISSN
1098-0121
eISSN
1550-235X
D.O.I.
10.1103/PhysRevB.96.024437
Publisher site
See Article on Publisher Site

Abstract

We quantify and compare the relative weight of inverse spin-Hall and spin-rectification effects occurring in metallic polycrystalline (Py/Pt), epitaxial (Fe/Pt), and insulating (YIG/Pt) bilayers. To distinguish the spin rectification signal from the inverse spin-Hall voltage the external magnetic field is rotated in plane to take advantage of the different angular dependencies of the prevailing effects. We prove that in permalloy anisotropic magnetoresistance is the dominant source for spin rectification while in epitaxial iron the anomalous Hall effect has a comparable strength. The rectification in yttrium-iron-garnet/platinum bilayers reveals an angular dependence imitating the one seen for anisotropic magnetoresistance and anomalous Hall effect caused by spin-Hall magnetoresistance.

Journal

Physical Review BAmerican Physical Society (APS)

Published: Jul 24, 2017

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