Magnonic Crystal Theory of the Spin-Wave Frequency Gap in Low-Doped Manganites
arXiv:cond-mat/0508389 · doi:10.1063/1.2356082
Abstract
A theory of three-dimensional (3D) hypothetical magnonic crystal (conceived as the magnetic counterpart of the well-known photonic crystal) is developed and applied to explain the existence of a spin-wave frequency gap recently revealed in low-doped manganites by neutron scattering. A successful confrontation with the experimental results allows us to formulate a working hypothesis that certain manganites could be regarded as 3D magnonic crystals existing in nature.
5 pages, 3 figures, submitted to PRL