Spin-wave self-modulation instability in a perpendicularly magnetized magnonic crystal

18th International Conference PhysicA.SPb

Drozdovskii, A.V.^1,2 ; Kalinikos, B.A.^1 ; Ustinov, A.B.^1 ; Stashkevich, A.^2,3

Department of Physical Electronics and Technology, St. Petersburg Electrotechnical University, St.-Petersburg

197376, Russia^1

International Laboratory MultiferrLab, ITMO University, St.-Petersburg

197101, United States^2

LSPM (CNRS-UPR 3407), Universite Paris, 13, Sorbonne Paris Cite, Villetaneuse

93430, France^3

关键词: Dark pulse;    Magnetic film structure;    Magnonic crystals;    Nonlinear waveform;    Self modulation;    Spin-wave spectrum;   

Others  :  https://iopscience.iop.org/article/10.1088/1742-6596/769/1/012071/pdf
DOI  :  10.1088/1742-6596/769/1/012071

来源: IOP

【 摘 要 】

Self-modulation instability of microwave spin waves monochromatically excited in a periodic magnetic film structure, a magnonic crystal, has been observed. The phenomena occurs only at the frequencies corresponding to the band gaps of the spin-wave spectrum of the magnonic crystal. Depending on the frequency within the band gap the nonlinear waveforms have a shape of bright or dark pulses.