講演情報
[17a-D61-8]Chaotic dynamics of spintronic oscillator with tunable anharmonic potential
〇(M1)Ryo Tatsumi1, Takahiro Chiba1, Takash Komine2, Hiroaki Matsueda1 (1.Tohoku Univ., 2.Ibaragi Univ.)
キーワード：
spin torque FMR、chaos、STO
In this study, we theoretically propose a spintronic oscillator that realizes chaotic magnetization dynamics in the spin-torque ferromagnetic resonance. This model is inspired by the Duffing equation which represents chaotic dynamics in a particle system. Based on the Landau-Lifshitz-Gilbert equation, we investigated the magnetization dynamics and find that chaotic dynamics occurs when the input is around 20 mT, whose value is about 1/10 of the previous study.
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