Document Type
Journal Article
Publisher
IOP Publishing Ltd and Deutsche Physikalische Gesellschaft
Faculty
Faculty of Health, Engineering and Science
School
Electron Science Research Institute
RAS ID
15813
Abstract
The spectral properties of the transverse magneto-optical Kerr effect (TMOKE) in periodic metal–dielectric hybrid structures are studied, in particular with respect to the achievable magnitude. It is shown that the TMOKE is sensitive to the magneto-optical activity of the bismuth-substituted rare-earth iron garnet, which is used as a dielectric material in the investigated structures. For samples with larger Bi substitution level and, consequently, larger gyration constant, the magnitude of the TMOKE increases and reaches 13% in the case of a Bi1.8Lu1.2Fe3.6Al1.4O12 magnetic film. Further, it is demonstrated that the TMOKE vanishes at the high-symmetry points of the Brillouin zone (at the Γ and X points). The main enhancement of the TMOKE takes place near the resonances of the surface plasmon polaritons (SPPs) at the metal/magnetic–dielectric interface. However, near the degenerate resonances of the SPPs at the air/metal and metal/magnetic–dielectric interfaces the TMOKE is increased by the air/metal SPPs as well. This phenomenon is explained in terms of a coupled oscillator model.
DOI
10.1088/1367-2630/15/7/075024
Creative Commons License
This work is licensed under a Creative Commons Attribution 3.0 License.
Comments
Pohl, M., Kreilkamp, L., Belotelov, V., Akimov, I., Kalish, A., Khokhlov, N., Yallapragada, V., Gopal, A., Nur E Alam, M. , Vasiliev, M. , Yakovlev, D., Alameh, K. , Zvezdin, A., & Bayer, M. (2013). Tuning of the transverse magneto-optical Kerr effect in magneto-plasmonic crystals. New Journal Of Physics, 15, Article 075024. Available here