Spin-hall-active platinum thin films grown via atomic layer deposition

Beitrag in einer Fachzeitschrift


Details zur Publikation

Autor(en): Schlitz R, Amusan AA, Lammel M, Schlicht S, Tynell T, Bachmann J, Woltersdorf G, Nielsch K, Goennenwein STB, Thomas A
Zeitschrift: Applied Physics Letters
Verlag: AMER INST PHYSICS
Jahr der Veröffentlichung: 2018
Band: 112
Heftnummer: 24
ISSN: 0003-6951


Abstract

We study the magnetoresistance of yttrium iron garnet/Pt heterostructures in which the Pt layer was grown via atomic layer deposition (ALD). Magnetotransport experiments in three orthogonal rotation planes reveal the hallmark features of spin Hall magnetoresistance. To estimate the spin transport parameters, we compare the magnitude of the magnetoresistance in samples with different Pt thicknesses. We check the spin Hall angle and the spin diffusion length of the ALD Pt layers against the values reported for high-quality sputter-deposited Pt films. The spin diffusion length of 1.5 nm agrees well with that of platinum thin films reported in the literature, whereas the spin Hall magnetoresistance Delta rho/rho q = 2.2 x 10(-5) is approximately a factor of 20 smaller compared to that of our sputter-deposited films. Our results demonstrate that ALD allows fabricating spin-Hall-active Pt films of suitable quality for use in spin transport structures. This work provides the basis to establish conformal ALD coatings for arbitrary surface geometries with spin-Hall-active metals and could lead to 3D spintronic devices in the future. Published by AIP Publishing.


FAU-Autoren / FAU-Herausgeber

Bachmann, Julien Prof.
Lehrstuhl für Chemistry of thin film materials
Schlicht, Stefanie
Lehrstuhl für Chemistry of thin film materials


Autor(en) der externen Einrichtung(en)
Leibniz-Institut für Festkörper- und Werkstoffforschung Dresden e.V. (IFW) / Leibniz Institute for Solid State and Materials Research Dresden
Martin-Luther-Universität Halle-Wittenberg (MLU)
Technische Universität Dresden


Zitierweisen

APA:
Schlitz, R., Amusan, A.A., Lammel, M., Schlicht, S., Tynell, T., Bachmann, J.,... Thomas, A. (2018). Spin-hall-active platinum thin films grown via atomic layer deposition. Applied Physics Letters, 112(24). https://dx.doi.org/10.1063/1.5025472

MLA:
Schlitz, Richard, et al. "Spin-hall-active platinum thin films grown via atomic layer deposition." Applied Physics Letters 112.24 (2018).

BibTeX: 

Zuletzt aktualisiert 2019-04-02 um 13:08