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Authors: Karnad, Gurucharan V.
Gorini, Cosimo
Lee, Kyujoon
Schulz, Tomek
Lo Conte, Roberto
Wells, A. W. J.
Han, Dong-So
Shahbazi, Kowsar
Kim, Jun-Seo
Moore, T. A.
Swagten, H. J. M.
Eckern, Ulrich
Raimondi, Roberto
Kläui, Mathias
Title: Evidence for phonon skew scattering in the spin Hall effect of platinum
Online publication date: 20-Aug-2019
Language: english
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 vertical bar Co vertical bar 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.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
URN: urn:nbn:de:hebis:77-publ-592057
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
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Journal: Physical review : B
Pages or article number: Art. 100405
Publisher: American Physical Society
Publisher place: College Park, Md.
Issue date: 2018
ISSN: 2469-9969
Publisher URL:
Publisher DOI: 10.1103/PhysRevB.97.100405
Appears in collections:JGU-Publikationen

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