Enhanced directional dichroism of terahertz light in resonance with magnetic excitations of the multiferroic Ba2CoGe2O7 oxide compound
- We propose that concurrently magnetic and ferroelectric, i.e., multiferroic, compounds endowed with electrically active magnetic excitations (electromagnons) provide a key to producing large directional dichroism for long wavelengths of light. By exploiting the control of ferroelectric polarization and magnetization in a multiferroic oxide Ba2CoGe2O7, we demonstrate the realization of such a directional light-switch function at terahertz frequencies in resonance with the electromagnon absorption. Our results imply that this hidden potential is present in a broad variety of multiferroics.
Author: | István KézsmárkiORCiDGND, N. Kida, H. Murakawa, Sándor Bordács, Y. Onose, Y. Tokura |
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URN: | urn:nbn:de:bvb:384-opus4-437235 |
Frontdoor URL | https://opus.bibliothek.uni-augsburg.de/opus4/43723 |
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: | 2011 |
Publishing Institution: | Universität Augsburg |
Release Date: | 2018/11/19 |
Volume: | 106 |
Issue: | 5 |
First Page: | 057403 |
DOI: | https://doi.org/10.1103/physrevlett.106.057403 |
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 |