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.
| Author: | V. Kocsis, Sándor BordácsORCiD, Joachim DeisenhoferORCiDGND, L. F. Kiss, K. Ohgushi, Y. Kaneko, Y. Tokura, István KézsmárkiORCiDGND |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-713921 |
| Frontdoor URL | https://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 |
