Autoren:	Cramer, Joel Ritzmann, Ulrike Dong, Bo-Wen Jaiswal, Samridh Qiu, Zhiyong Saitoh, Eiji Nowak, Ulrich Kläui, Mathias
Titel:	Spin transport across antiferromagnets induced by the spin Seebeck effect
Online-Publikationsdatum:	20-Aug-2019
Erscheinungsdatum:	2018
Sprache des Dokuments:	Englisch
Zusammenfassung/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-Sachgruppe:	530 Physik 530 Physics
Veröffentlichende Institution:	Johannes Gutenberg-Universität Mainz
Organisationseinheit:	FB 08 Physik, Mathematik u. Informatik
Veröffentlichungsort:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-199
URN:	urn:nbn:de:hebis:77-publ-591947
Version:	Accepted version
Publikationstyp:	Zeitschriftenaufsatz
Nutzungsrechte:	Urheberrechtsschutz
Informationen zu den Nutzungsrechten:	https://rightsstatements.org/vocab/InC/1.0/
Zeitschrift:	Journal of physics : D, Applied physics 51 14
Seitenzahl oder Artikelnummer:	Art. 14404
Verlag:	IOP Publ.
Verlagsort:	Bristol
Erscheinungsdatum:	2018
ISSN:	0022-3727 1361-6463
URL der Originalveröffentlichung:	http://dx.doi.org/10.1088/1361-6463/aab223
DOI der Originalveröffentlichung:	10.1088/1361-6463/aab223
Enthalten in den Sammlungen:	JGU-Publikationen