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- W4288454984 abstract "Magnetic vortex is topologically nontrivial and commonly found in ferromagnetic nanodisks. Here, using micromagnetic simulation and analytical calculation, we reveal twisted spin-wave modes in thick permalloy (Ni0.8Fe0.2) nanodisks. The twisted spin-waves carry topological charges, which sign depends on the core polarity of the magnetic vortex in the nanodisk. By applying localized, rotating magnetic fields at one end of the sample, we observe continuous generation of twisted spin-waves with topological charge l=±1 and ±2, which are manifested by the helical structures of phase fronts. The dispersion relation of twisted spin-waves is derived analytically and the result is in good agreement with micromagnetic numerical calculations." @default.
- W4288454984 created "2022-07-29" @default.
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- W4288454984 date "2022-11-01" @default.
- W4288454984 modified "2023-09-25" @default.
- W4288454984 title "Excitation modes of twisted spin-waves in thick ferromagnetic nanodisks" @default.
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- W4288454984 doi "https://doi.org/10.1016/j.jmmm.2022.169762" @default.
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