Authors:	Ganzhorn, Kathrin Wimmer, Tobias Cramer, Joel Schlitz, Richard Geprägs, Stephan Jakob, Gerhard Gross, Rudolf Huebl, Hans Kläui, Mathias Goennenwein, Sebastian T. B.
Title:	Temperature dependence of the non-local spin Seebeck effect in YIG/Pt nanostructures
Online publication date:	20-Aug-2019
Year of first publication:	2017
Language:	english
Abstract:	We study the transport of thermally excited non-equilibrium magnons through the ferrimagnetic insulator YIG using two electrically isolated Pt strips as injector and detector. The diffusing magnons induce a non-local inverse spin Hall voltage in the detector corresponding to the so-called non-local spin Seebeck effect (SSE). We measure the non-local SSE as a function of temperature and strip separation. In experiments at room temperature we observe a sign change of the non-local SSE voltage at a characteristic strip separation d(0), in agreement with previous investigations. At lower temperatures however, we find a strong temperature dependence of d(0). This suggests that both the angular momentum transfer across the YIG/Pt interface as well as the transport mechanism of the magnons in YIG as a function of temperature must be taken into account to describe the non-local SSE. (C) 2017 Author(s).
DDC:	530 Physik 530 Physics
Institution:	Johannes Gutenberg-Universität Mainz
Department:	FB 08 Physik, Mathematik u. Informatik
Place:	Mainz
ROR:	https://ror.org/023b0x485
DOI:	http://doi.org/10.25358/openscience-99
URN:	urn:nbn:de:hebis:77-publ-592013
Version:	Accepted version
Publication type:	Zeitschriftenaufsatz
License:	In Copyright
Information on rights of use:	https://rightsstatements.org/vocab/InC/1.0/
Journal:	AIP Advances 7 8
Pages or article number:	Art. 085102
Publisher:	American Inst. of Physics
Publisher place:	New York, NY
Issue date:	2017
ISSN:	2158-3226
Publisher URL:	http://dx.doi.org/10.1063/1.4986848
Publisher DOI:	10.1063/1.4986848
Appears in collections:	JGU-Publikationen