Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-6287
Authors: Pfeiffer, Alexander
Reeve, Robert M.
Elphick, Kevin
Hirohata, Atsufumi
Kläui, Mathias
Title: Revealing the importance of interfaces for pure spin current transport
Online publication date: 20-Aug-2021
Language: english
Abstract: Spin transport phenomena underpin an extensive range of spintronic effects. In particular spin transport across interfaces occurs in most device concepts, but is so far poorly understood. As interface properties strongly impact spin transport, one needs to characterize and correlate them to the fabrication method. Here we investigate pure spin current transport across interfaces and connect this with imaging of the interfaces. We study the detection of pure spin currents via the inverse spin Hall effect in Pt and the related spin current absorption by Pt in Py-Cu-Pt lateral spin valves. Depending on the fabrication process, we either find a large (inverse) spin Hall effect signal and low spin absorption by Pt or vice versa and a similar effect is seen also for spin current absorption in CoFe-Cu-based devices. We explain these counterintuitive results by the fabrication-induced varying quality of the interfaces, which is directly revealed via a special scanning electron microscopy technique for interface imaging and correlated to the spin transport.
DDC: 530 Physik
530 Physics
Institution: Johannes Gutenberg-Universität Mainz
Department: FB 08 Physik, Mathematik u. Informatik
Place: Mainz
DOI: http://doi.org/10.25358/openscience-6287
Version: Published version
Publication type: Zeitschriftenaufsatz
Document type specification: Scientific article
License: CC BY
Information on rights of use: https://creativecommons.org/licenses/by/4.0/
Journal: Physical review research
3
2
Pages or article number: 023110
Publisher: American Physical Society
Publisher place: College Park, MD
Issue date: 2021
ISSN: 2643-1564
Publisher URL: https://doi.org/10.1103/PhysRevResearch.3.023110
Publisher DOI: 10.1103/PhysRevResearch.3.023110
Appears in collections:JGU-Publikationen

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