Thermoelectric Signature of Individual Skyrmions

authored by

Alexander Fernández Scarioni, Craig Barton, Héctor Corte-León, Sibylle Sievers, Xiukun Hu, Fernando Ajejas, William Legrand, Nicolas Reyren, Vincent Cros, Olga Kazakova, Hans W. Schumacher

Abstract

We experimentally study the thermoelectrical signature of individual skyrmions in chiral Pt/Co/Ru multilayers. Using a combination of controlled nucleation, single skyrmion annihilation, and magnetic field dependent measurements the thermoelectric signature of individual skyrmions is characterized. The observed signature is explained by the anomalous Nernst effect of the skyrmion's spin structure. Possible topological contributions to the observed thermoelectrical signature are discussed. Such thermoelectrical characterization allows for noninvasive detection and counting of skyrmions and enables fundamental studies of topological thermoelectric effects on the nanoscale.

External Organisation(s)

National Metrology Institute of Germany (PTB)
National Physical Laboratory (NPL)
Université Paris-Saclay

Type

Article

Journal

Physical review letters

Volume

126

ISSN

0031-9007

Publication date

16.02.2021

Publication status

Published

Peer reviewed

Yes

ASJC Scopus subject areas

Physics and Astronomy(all)

Electronic version(s)

https://doi.org/10.1103/PhysRevLett.126.077202 (Access: Open)