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Spin wave localization in tangentially magnetized films



Elena V. Tartakovskaya, Martha Pardavi-Horvath, Robert McMichael


We present an analytical description of localized spin wave modes that form in a parabolic field minimum in a thin ferromagnetic film. Mode profiles proportional to Hermite functions are eigen-functions of the applied field and exchange parts of the equations of motion, and also provide a basis for numerical approximation of magnetostatic interactions. We find that the spin wave modes are roughly equally spaced in frequency and roughly equal in intensity. The calculated mode frequencies and corresponding profiles of localized spin wave modes are in good agreement with micromagnetic modeling and previously published experimental results on multiple resonances from a series of localized modes detected by ferromagnetic resonance force microscopy.
Physical Review B


spin waves, nanomagnet, magnetiazation dynamics, spintronics, ferromagnetic resonance


Tartakovskaya, E. , Pardavi-Horvath, M. and McMichael, R. (2016), Spin wave localization in tangentially magnetized films, Physical Review B, [online],, (Accessed June 25, 2024)


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Created June 27, 2016, Updated October 12, 2021