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
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

Pagination

156702

Auteurs

Igor Lyalin (I)

Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.

Sanaz Alikhah (S)

Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-75120 Uppsala, Sweden.

Marco Berritta (M)

Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-75120 Uppsala, Sweden.
Department of Physics and Astronomy, University of Exeter, Stocker Road, Exeter EX4 4QL, United Kingdom.

Peter M Oppeneer (PM)

Department of Physics and Astronomy, Uppsala University, P.O. Box 516, SE-75120 Uppsala, Sweden.

Roland K Kawakami (RK)

Department of Physics, The Ohio State University, Columbus, Ohio 43210, USA.

Classifications MeSH