Local thermoelectric response from a single Neél domain wall

verfasst von
Robert Puttock, Craig Barton, Elias Saugar, Petr Klapetek, Alexander Fernández-Scarioni, Paulo Freitas, Hans W. Schumacher, Thomas Ostler, Oksana Chubykalo-Fesenko, Olga Kazakova
Abstract

Spatially resolved thermoelectric detection of magnetic systems provides a unique platform for the investigation of spintronic and spin caloritronic effects. Hitherto, these investigations have been resolution-limited, confining analysis of the thermoelectric response to regions where the magnetization is uniform or collinear at length scales comparable to the domain size. Here, we investigate the thermoelectric response from a single trapped domain wall using a heated scanning probe. Following this approach, we unambiguously resolve the domain wall due to its local thermoelectric response. Combining analytical and thermal micromagnetic modeling, we conclude that the measured thermoelectric signature is unique to that of a domain wall with a Neél-like character. Our approach is highly sensitive to the plane of domain wall rotation, which permits the distinct identification of Bloch or Neél walls at the nanoscale and could pave the way for the identification and characterization of a range of noncollinear spin textures through their thermoelectric signatures.

Externe Organisation(en)
National Physical Laboratory
Spanish National Research Council (CSIC)
Czech Metrology Institute
Technische Universität Brünn (VRT)
Physikalisch-Technische Bundesanstalt (PTB)
INESC-ID
Sheffield Hallam University
University of Hull
Typ
Artikel
Journal
Science advances
Band
8
ISSN
2375-2548
Publikationsdatum
11.2022
Publikationsstatus
Veröffentlicht
Peer-reviewed
Ja
ASJC Scopus Sachgebiete
Allgemein
Elektronische Version(en)
https://doi.org/10.1126/sciadv.adc9798 (Zugang: Offen)