Observation of the spin Nernst effect

Journal article (2017)

Authors

S Meyer Technische Universität München, Bayerische Akademie der Wissenschaften
Y. Chen Kavli institute of nanoscience Delft, QN/Nazarov Group - AS , RIKEN Center for Emergent Matter Science (CEMS)
G.E. Bauer QN/Bauer Group - AS , Kavli institute of nanoscience Delft, Tohoku University
R Gross Nanosystems Initiative Munich (NIM), Technische Universität München, Bayerische Akademie der Wissenschaften
S. T.B. Goennenwein Bayerische Akademie der Wissenschaften, Technische Universität München, Nanosystems Initiative Munich (NIM)
S. Wimmer Ludwig Maximilians University
M Althammer Bayerische Akademie der Wissenschaften
T. Wimmer Technische Universität München, Bayerische Akademie der Wissenschaften
Richard Schlitz Bayerische Akademie der Wissenschaften
S Geprags Bayerische Akademie der Wissenschaften
H Huebl Bayerische Akademie der Wissenschaften, Nanosystems Initiative Munich (NIM), Technische Universität München
D. Kodderitzsch Ludwig Maximilians University
H. Ebert Ludwig Maximilians University
Research Group
QN/Bauer Group (AS) (TU Delft)
Copyright: © 2017 S Meyer, Y. Chen, S. Wimmer, M Althammer, T. Wimmer, Richard Schlitz, S Geprags, H Huebl, D. Kodderitzsch, H. Ebert, G.E. Bauer, R Gross, S. T.B. Goennenwein
DOI: https://doi.org/10.1038/NMAT4964
More Info
expand_more

Published Date

01-10-2017

Language

English

Reuse Rights

Other than for strictly personal use, it is not permitted to download, forward or distribute the text or part of it, without the consent of the author(s) and/or copyright holder(s), unless the work is under an open content license such as Creative Commons.

Faculty

Applied Sciences

Department

QN/Quantum Nanoscience

Research Group

QN/Bauer Group

Abstract

The observation of the spin Hall effect triggered intense research on pure spin current transport. With the spin Hall effect, the spin Seebeck effect and the spin Peltier effect already observed, our picture of pure spin current transport is almost complete. The only missing piece is the spin Nernst (-Ettingshausen) effect, which so far has been discussed only on theoretical grounds. Here, we report the observation of the spin Nernst effect. By applying a longitudinal temperature gradient, we generate a pure transverse spin current in a Pt thin film. For readout, we exploit the magnetization-orientation-dependent spin transfer to an adjacent yttrium iron garnet layer, converting the spin Nernst current in Pt into a controlled change of the longitudinal and transverse thermopower voltage. Our experiments show that the spin Nernst and the spin Hall effect in Pt are of comparable magnitude, but differ in sign, as corroborated by first-principles calculations.

Files

NatMat_letter_submission_2017_... (pdf)
(pdf | 4.3 Mb)
- Embargo expired in 11-03-2018
Unknown license