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Authors: Bose, Arnab
Kammerbauer, Fabian
Gupta, Rahul
Go, Dongwook
Mokrousov, Yuriy
Jakob, Gerhard
Kläui, Mathias
Title: Detection of long-range orbital-Hall torques
Online publication date: 19-Jun-2023
Year of first publication: 2023
Language: english
Abstract: We report and quantify a large orbital-Hall torque generated by Nb and Ru, which we identify from the strong dependence of torques on the ferromagnets. This is manifested as strong enhancement in the dampinglike torques measured in Nb (or Ru)/Ni bilayers as compared to Nb (or Ru)/FeCoB bilayers including the sign reversal in the case of Nb/(Ni or FeCoB) samples. We experimentally observe a striking enhancement of the measured torques with the increase of ferromagnetic Ni thickness which is markedly different from the regular spin-transfer torque; this could be a unique signature of long-range action of the orbital-Hall torques.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
Version: Published version
Publication type: Zeitschriftenaufsatz
License: In Copyright
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Journal: Physical review : B, Condensed matter and materials physics
Pages or article number: 134423
Publisher: American Physical Society
Publisher place: Ridge, NY
Issue date: 2023
ISSN: 2469-9950
Publisher DOI: 10.1103/PhysRevB.107.134423
Appears in collections:JGU-Publikationen

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