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

Karnad GV, Gorini C, Lee K, Schulz T, Lo Conte R, Wells AWJ, Han DS, Shahbazi K, Kim JS, Moore TA, Swagten HJM, Eckern U, Raimondi R, Klaeui M (2018)

Publication Type: Journal article

Publication year: 2018

Journal

Physical Review B American Physical Society

Book Volume: 97

Article Number: 100405

Journal Issue: 10

DOI: 10.1103/PhysRevB.97.100405

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.

Involved external institutions

Johannes Gutenberg-Universität Mainz (JGU) DE Germany (DE) Universität Regensburg DE Germany (DE) University of Leeds GB United Kingdom (GB) Eindhoven University of Technology / Technische Universiteit Eindhoven (TU/e) NL Netherlands (NL) Universität Augsburg DE Germany (DE) Università degli Studi Roma Tre IT Italy (IT)

How to cite

APA:

Karnad, G.V., Gorini, C., Lee, K., Schulz, T., Lo Conte, R., Wells, A.W.J.,... Klaeui, M. (2018). Evidence for phonon skew scattering in the spin Hall effect of platinum. Physical Review B, 97(10). https://doi.org/10.1103/PhysRevB.97.100405

MLA:

Karnad, G. V., et al. "Evidence for phonon skew scattering in the spin Hall effect of platinum." Physical Review B 97.10 (2018).

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