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Evidence for phonon skew scattering in the spin Hall effect of platinum

Title
Evidence for phonon skew scattering in the spin Hall effect of platinum
Authors
Karnad, G. V.Gorini, C.Lee, K.Schulz, T.Lo Conte, R.Wells, A. W. J.Han, D. -S.Shahbazi, K.Kim, June-SeoMoore, T. A.Swagten, H. J. M.Eckern, U.Raimondi, R.Klaeui, M.
DGIST Authors
Kim, June-Seo
Issue Date
2018-03
Citation
Physical Review B, 97(10)
Type
Article
Article Type
Article
Keywords
OrientationElectrons
ISSN
2469-9950
Abstract
We measure and analyze the effective spin Hall angle of platinum in the low-residual resistivity regime by second-harmonic measurements of the spin-orbit torques for a multilayer of Pt|Co|AlOx. An angular-dependent study of the torques allows us to extract the effective spin Hall angle responsible for the damping-like torque in the system. We observe a strikingly nonmonotonic and reproducible temperature dependence of the torques. This behavior is compatible with recent theoretical predictions which include both intrinsic and extrinsic (impurities and phonons) contributions to the spin Hall effect at finite temperatures. © 2018 American Physical Society.
URI
http://hdl.handle.net/20.500.11750/6216
DOI
10.1103/PhysRevB.97.100405
Publisher
American Physical Society
Related Researcher
Files:
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Collection:
Intelligent Devices and Systems Research Group1. Journal Articles


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