Please use this identifier to cite or link to this item: http://doi.org/10.25358/openscience-199
Authors: Cramer, Joel
Ritzmann, Ulrike
Dong, Bo-Wen
Jaiswal, Samridh
Qiu, Zhiyong
Saitoh, Eiji
Nowak, Ulrich
Kläui, Mathias
Title: Spin transport across antiferromagnets induced by the spin Seebeck effect
Online publication date: 20-Aug-2019
Language: english
Abstract: For prospective spintronics devices based on the propagation of pure spin currents, antiferromagnets are an interesting class of materials that potentially entail a number of advantages as compared to ferromagnets. Here, we present a detailed theoretical study of magnonic spin current transport in ferromagnetic-antiferromagnetic multilayers by using atomistic spin dynamics simulations. The relevant length scales of magnonic spin transport in antiferromagnets are determined. We demonstrate the transfer of angular momentum from a ferromagnet into an antiferromagnet due to the excitation of only one magnon branch in the antiferromagnet. As an experimental system, we ascertain the transport across an antiferromagnet in Y3Fe5O12 vertical bar Ir20Mn80 vertical bar Pt heterostructures. We determine the spin transport signals for spin currents generated in the Y3Fe5O12 by the spin Seebeck effect and compare to measurements of the spin Hall magnetoresistance in the heterostructure stack. By means of temperature-dependent and thickness-dependent measurements, we deduce conclusions on the spin transport mechanism across Ir20Mn80 and furthermore correlate it to its paramagnetic-antiferromagnetic phase transition.
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-199
Version: Accepted version
Publication type: Zeitschriftenaufsatz
License: in Copyright
Information on rights of use: https://rightsstatements.org/vocab/InC/1.0/
Journal: Journal of physics : D, Applied physics
51
14
Pages or article number: Art. 14404
Publisher: IOP Publ.
Publisher place: Bristol
Issue date: 2018
ISSN: 0022-3727
1361-6463
Publisher's URL: http://dx.doi.org/10.1088/1361-6463/aab223
Appears in collections:JGU-Publikationen

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