Strong magneto-optical effects in ACr2O4 (A=Fe,Co) spinel oxides generated by tetrahedrally coordinated transition metal ions

  • Magneto-optical effects have been investigated over the infrared visible spectral range in ACr2O4 (A=Fe,Co) spinel oxides with noncollinear spin orders in their ground states. We found large magneto-optical Kerr rotation and ellipticity at the on-site d−d transitions of the A2+ ions located within the charge gap. The magneto-optical Kerr rotation of ϑKerr≈12∘ observed in CoCr2O4 is unprecedentedly large among magnetic semiconductors and points toward the uniqueness of tetrahedrally coordinated Co2+ ions in generating strong magneto-optical response. Criteria of strong magneto-optical effects emerging at on-site d−d transitions of transition metal ions are discussed.

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Metadaten
Author:V. Kocsis, Sándor Bordács, Joachim DeisenhoferORCiDGND, L. F. Kiss, K. Ohgushi, Y. Kaneko, Y. Tokura, István KézsmárkiORCiDGND
URN:urn:nbn:de:bvb:384-opus4-713921
Frontdoor URLhttps://opus.bibliothek.uni-augsburg.de/opus4/71392
ISSN:2469-9950OPAC
ISSN:2469-9969OPAC
Parent Title (English):Physical Review B
Publisher:American Physical Society (APS)
Type:Article
Language:English
Year of first Publication:2018
Publishing Institution:Universität Augsburg
Release Date:2020/02/26
Volume:97
Issue:12
First Page:125140
DOI:https://doi.org/10.1103/physrevb.97.125140
Institutes:Mathematisch-Naturwissenschaftlich-Technische Fakultät
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik
Mathematisch-Naturwissenschaftlich-Technische Fakultät / Institut für Physik / Lehrstuhl für Experimentalphysik V
Dewey Decimal Classification:5 Naturwissenschaften und Mathematik / 53 Physik / 530 Physik
Licence (German):Deutsches Urheberrecht