Microwave directional dichroism resonant with spin excitations in the polar ferromagnet GaV4S8
- We have investigated the directional dichroism of magnetic resonance spectra in the polar ferromagnet GaV4S8. While four types of structural domains are energetically degenerated under a zero field, the magnetic resonance for each domain is well separated by applying magnetic fields due to uniaxial magnetic anisotropy. Consequently, a directional dichroism as large as 20% is clearly observed without domain cancellation. The present observation therefore demonstrates that not only magnetoelectric monodomain crystals but also magnetoelectric multidomain specimens can be used to realize microwave (optical) diodes owing to the lack of inversion domains.
| Author: | Y. Okamura, S. Seki, Sándor Bordács, Á. Butykai, Vladimir TsurkanORCiDGND, István KézsmárkiORCiDGND, Y. Tokura |
|---|---|
| URN: | urn:nbn:de:bvb:384-opus4-490374 |
| Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/49037 |
| ISSN: | 0031-9007OPAC |
| ISSN: | 1079-7114OPAC |
| Parent Title (English): | Physical Review Letters |
| Publisher: | American Physical Society (APS) |
| Type: | Article |
| Language: | English |
| Year of first Publication: | 2019 |
| Publishing Institution: | Universität Augsburg |
| Release Date: | 2019/02/27 |
| Tag: | General Physics and Astronomy |
| Volume: | 122 |
| Issue: | 5 |
| First Page: | 057202 |
| DOI: | https://doi.org/10.1103/physrevlett.122.057202 |
| 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 |
