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

Schlitz R, Amusan AA, Lammel M, Schlicht S, Tynell T, Bachmann J, Woltersdorf G, Nielsch K, Goennenwein STB, Thomas A (2018)

Publication Status: Published

Publication Type: Journal article

Publication year: 2018

Journal

Applied Physics Letters American Institute of Physics (AIP)

Publisher: AMER INST PHYSICS

Book Volume: 112

Journal Issue: 24

DOI: 10.1063/1.5025472

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.

Authors with CRIS profile

Stefanie Schlicht Lehrstuhl für Chemistry of thin film materials Julien Bachmann Lehrstuhl für Chemistry of thin film materials

Involved external institutions

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

How to cite

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).

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