The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer

The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer

We use Kerr microscopy to characterize magnetic domain walls in Co/Ni based magnetic nanowires grown on a Pt seedlayer with a thin Ptx(Ir,Au)1−x buffer layer. The buffer layer composition enables control of the interfacial DMI vector as measured from the asymmetric bubble expansion technique while t...

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Main Authors: D. Lau, V. Sokalski
Format: Article
Language:English
Published: AIP Publishing LLC 2019-03-01
Series:AIP Advances
Online Access:http://dx.doi.org/10.1063/1.5079825
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spelling doaj-6853544ec4e8423a954f1e20cd8af68c2020-11-25T00:12:51ZengAIP Publishing LLCAIP Advances2158-32262019-03-0193035208035208-410.1063/1.5079825011992ADVThe interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayerD. Lau0V. Sokalski1Department of Materials Science & Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USADepartment of Materials Science & Engineering, Carnegie Mellon University, Pittsburgh, Pennsylvania 15213, USAWe use Kerr microscopy to characterize magnetic domain walls in Co/Ni based magnetic nanowires grown on a Pt seedlayer with a thin Ptx(Ir,Au)1−x buffer layer. The buffer layer composition enables control of the interfacial DMI vector as measured from the asymmetric bubble expansion technique while the thicker Pt seedlayer is expected to govern the spin Hall angle. Additions of either Ir or Au to the Pt buffer layer give rise to a marked drop in the interfacial DMI vector. The efficiency of current induced magnetic domain wall motion in nanowires shows a direct relation to DMI across the composition spectrum. This correlation is discussed in the context of future spintronic devices as a mechanism for engineering the spin-orbit coupling properties of complex magnetic multi-layers.http://dx.doi.org/10.1063/1.5079825
collection DOAJ
language English
format Article
sources DOAJ
author D. Lau
V. Sokalski
spellingShingle D. Lau
V. Sokalski
The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer
AIP Advances
author_facet D. Lau
V. Sokalski
author_sort D. Lau
title The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer
title_short The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer
title_full The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer
title_fullStr The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer
title_full_unstemmed The interfacial Dzyaloshinskii-Moriya interaction and spin-orbit torque driven domain wall motion in Co/Ni multi-layers with a Ptx(Ir,Au)1−x seedlayer
title_sort interfacial dzyaloshinskii-moriya interaction and spin-orbit torque driven domain wall motion in co/ni multi-layers with a ptx(ir,au)1−x seedlayer
publisher AIP Publishing LLC
series AIP Advances
issn 2158-3226
publishDate 2019-03-01
description We use Kerr microscopy to characterize magnetic domain walls in Co/Ni based magnetic nanowires grown on a Pt seedlayer with a thin Ptx(Ir,Au)1−x buffer layer. The buffer layer composition enables control of the interfacial DMI vector as measured from the asymmetric bubble expansion technique while the thicker Pt seedlayer is expected to govern the spin Hall angle. Additions of either Ir or Au to the Pt buffer layer give rise to a marked drop in the interfacial DMI vector. The efficiency of current induced magnetic domain wall motion in nanowires shows a direct relation to DMI across the composition spectrum. This correlation is discussed in the context of future spintronic devices as a mechanism for engineering the spin-orbit coupling properties of complex magnetic multi-layers.
url http://dx.doi.org/10.1063/1.5079825
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AT vsokalski theinterfacialdzyaloshinskiimoriyainteractionandspinorbittorquedrivendomainwallmotioninconimultilayerswithaptxirau1xseedlayer
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