Magneto-Optical Detection of the Orbital Hall Effect in Chromium.
Journal
Physical review letters
ISSN: 1079-7114
Titre abrégé: Phys Rev Lett
Pays: United States
ID NLM: 0401141
Informations de publication
Date de publication:
13 Oct 2023
13 Oct 2023
Historique:
received:
09
06
2023
accepted:
07
09
2023
medline:
29
10
2023
pubmed:
29
10
2023
entrez:
28
10
2023
Statut:
ppublish
Résumé
The orbital Hall effect has been theoretically predicted but its direct observation is a challenge. Here, we report the magneto-optical detection of current-induced orbital accumulation at the surface of a light 3d transition metal, Cr. The orbital polarization is in-plane, transverse to the current direction, and scales linearly with current density, consistent with the orbital Hall effect. Comparing the thickness-dependent magneto-optical measurements with ab initio calculations, we estimate an orbital diffusion length in Cr of 6.6±0.6 nm.
Identifiants
pubmed: 37897779
doi: 10.1103/PhysRevLett.131.156702
doi:
Types de publication
Journal Article
Langues
eng
Sous-ensembles de citation
IM