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Evidence for phonon skew scattering in the spin Hall effect of platinum
- Evidence for phonon skew scattering in the spin Hall effect of platinum
- Karnad, G. V.; Gorini, C.; Lee, K.; Schulz, T.; Lo Conte, R.; Wells, A. W. J.; Han, D. -S.; Shahbazi, K.; Kim, June-Seo; Moore, T. A.; Swagten, H. J. M.; Eckern, U.; Raimondi, R.; Klaeui, M.
- DGIST Authors
- Kim, June-Seo
- Issue Date
- Physical Review B, 97(10)
- Article Type
- Orientation; Electrons
- 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.
- American Physical Society
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- Intelligent Devices and Systems Research Group1. Journal Articles
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