Abstract.
The eigenproblems of spin waves in a heterogeneous ferromagnetic bilayer system with periodic boundary conditions are solved using the interface-rescaling approach. Brillouin zone mapping and the eigenmodes of the system are investigated. We find three types of spin waves may exist in the system: the bulk mode, the interface mode, and the perfect confined mode. The fine structure of the energy band in the heterogeneous bilayer system is first given for the whole two-dimensional Brillouin zone. Conditions for the existence of the interface mode are discussed. Finally, we analyze the resonant-confined spin waves in bulk modes and their oscillating behavior.
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Zhou, W., Yun, G. & Liang, X. Brillouin-zone mapping of the spin waves in a ferromagnetic bilayer system. Eur. Phys. J. B 55, 37–42 (2007). https://doi.org/10.1140/epjb/e2007-00039-1
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DOI: https://doi.org/10.1140/epjb/e2007-00039-1