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arXiv · 1009.3363

Dynamics of coupled vortices in a pair of ferromagnetic disks

Satoshi Sugimoto·Yasuhiro Fukuma·Shinya Kasai·Takashi Kimura·Anjan Barman·YoshiChika Otani
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Abstract

We here experimentally demonstrate that coupled gyration modes can be resonantly excited primarily by the ac current in a pair of ferromagnetic disks with varied separating distance. The sole gyrotropic mode clearly splits into a higher and a lower frequency modes for different configurations of polarities via dipolar interaction. These experimental results indicate that the magnetostatically coupled pair of vortices behaves similar to a diatomic molecule with bonding and anti-bonding states. These findings lead to the possible extension of designing the magnonic band structure in a chain or an array of vortices.

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Satoshi Sugimoto, Yasuhiro Fukuma, Shinya Kasai, Takashi Kimura, Anjan Barman, YoshiChika Otani. 2011-04-20. Dynamics of coupled vortices in a pair of ferromagnetic disks. https://doi.org/10.1103/physrevlett.106.197203

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