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Recursive evolution of spin-wave multiplets in magnonic crystals of antidot-lattice fractals.

ABSTRACT: We explored spin-wave multiplets excited in a different type of magnonic crystal composed of ferromagnetic antidot-lattice fractals, by means of micromagnetic simulations with a periodic boundary condition. The modeling of antidot-lattice fractals was designed with a series of self-similar antidot-lattices in an integer Hausdorff dimension. As the iteration level increased, multiple splits of the edge and center modes of quantized spin-waves in the antidot-lattices were excited due to the fractals' inhomogeneous and asymmetric internal magnetic fields. It was found that a recursive development (F_n = F_n-1 + G_n-1) of geometrical fractals gives rise to the same recursive evolution of spin-wave multiplets.

SUBMITTER: Park G

PROVIDER: S-EPMC8604906 | biostudies-literature | 2021 Nov

REPOSITORIES: biostudies-literature

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Recursive evolution of spin-wave multiplets in magnonic crystals of antidot-lattice fractals.

Park Gyuyoung G Yang Jaehak J Kim Sang-Koog SK

Scientific reports 20211119 1

We explored spin-wave multiplets excited in a different type of magnonic crystal composed of ferromagnetic antidot-lattice fractals, by means of micromagnetic simulations with a periodic boundary condition. The modeling of antidot-lattice fractals was designed with a series of self-similar antidot-lattices in an integer Hausdorff dimension. As the iteration level increased, multiple splits of the edge and center modes of quantized spin-waves in the antidot-lattices were excited due to the fracta ...[more]

PMID: 34799564

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