Observation of magnetization waves in negative-index photonic metamaterials
- Author: G. Dolling, M. Wegener, A. Schädle, S. Burger, and S. Linden
- Source: Appl. Phys. Lett. 89, 231118 (2006)
- Date: 8.12.2006
By measuring and calculating oblique-incidence transmittance spectra of a negative-index photonic metamaterial layer, the authors infer the in-plane dispersion relation of the magnetization wave. From the geometry and the dispersion shape, the authors conclude that coupling is predominantly via magnetic dipoles for wave propagation along the magnetic-dipole direction. These magnetization waves are the classical analog of magnon excitations of quantum-mechanical spins.