Spin Seebeck Effect in Layered Ferromagnetic Insulators CrSiTe₃ and CrGeTe₃

Abstract

We have studied the longitudinal spin Seebeck effect (LSSE) in the layered ferromagnetic insulators CrSiTe₃ and CrGeTe₃ covered by Pt films in the measurement configuration where spin current traverses the ferromagnetic Cr layers. The LSSE response is clearly observed in the ferromagnetic phase and—in contrast to a standard LSSE magnet Y₃Fe₅O₁₂—persists above the critical temper- atures in both CrSiTe₃/Pt and CrGeTe₃/Pt samples. With the help of a numerical calculation, we attribute the LSSE signals observed in the paramagnetic regime to exchange-dominated interlayer transport of in-plane paramagnetic moments reinforced by short-range ferromagnetic correlations and strong Zeeman effects.

Metadata

Item Type:	Article
Authors/Creators:	Naohiro, I Kikkawa, T Barker, J https://orcid.org/0000-0003-4843-5516 Hirobe, D Shiomi, Y Saitoh, E
Copyright, Publisher and Additional Information:	© 2019, American Physical Society. Reproduced in accordance with the publisher's self-archiving policy.
Dates:	Published: 5 August 2019 Published (online): 5 August 2019 Accepted: 18 July 2019
Institution:	The University of Leeds
Academic Units:	The University of Leeds > Faculty of Engineering & Physical Sciences (Leeds) > School of Physics and Astronomy (Leeds) > Condensed Matter (Leeds)
Funding Information:	Funder Grant number Royal Society URF\R1\180333
Depositing User:	Symplectic Publications
Date Deposited:	22 Jul 2019 09:52
Last Modified:	25 Jun 2023 21:55
Status:	Published
Publisher:	American Physical Society
Identification Number:	10.1103/PhysRevB.100.060402
Open Archives Initiative ID (OAI ID):	oai:eprints.whiterose.ac.uk:148802

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Spin Seebeck Effect in Layered Ferromagnetic Insulators CrSiTe₃ and CrGeTe₃

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