Theoretical analysis of microwave magnonic crystals of finite length

17th Russian Youth Conference on Physics and Astronomy

物理学;天文学

Drozdovskii, A.V.^1 ; Nikitin, A.A.^2 ; Ustinov, A.B.^1

St. Petersburg Electrotechnical University, St. Petersburg

197376, Russia^1

ITMO University, St. Petersburg

197101, Russia^2

关键词: Bragg resonance;    Finite distance;    Finite length;    Magnonic crystals;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/661/1/012063/pdf
DOI  :  10.1088/1742-6596/661/1/012063

学科分类：天文学(综合)

来源: IOP

【 摘 要 】

Propagation of spin waves in a one-dimensional magnonic crystal to a finite distance have been studied theoretically. It was shown that, in contrast to the ideal spatially unlimited magnonic crystals with zero loss, there are no band gaps in the real magnonic crystals. The effective spectrum of spin waves at frequencies close to the Bragg resonances strongly depends on the magnonic crystal length.