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arXiv · 2501.13741

Quasi-fluxon bubble dynamics in a rapid oscillatory microwave field

Alicia G. Castro-Montes·Elram S. Figueroa·Juan F. Marín·Mónica A. García-Ñustes
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Abstract

In this article, we numerically study the dynamics of a two-dimensional quasi-fluxon bubble in an oscillatory regime stabilized by a localized annular force under a rapidly oscillating microwave field. The bubble exhibits two distinctly dynamical regimes. At first, the oscillation of the bubble wall scales up linearly with the microwave field frequency until it reaches a cutoff, after which it detaches from the external field, returning to its natural oscillation frequency. The amplitude of the quasi-fluxon oscillations is inversely proportional to the square of the microwave field frequency. Following a simplified model based on the Kapitza approach, we proved that this dynamical behavior is characteristic of systems with a harmonic potential subjected to a rapidly oscillating field. Possible applications of microwave detection are discussed.

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Alicia G. Castro-Montes, Elram S. Figueroa, Juan F. Marín, Mónica A. García-Ñustes. 2025-01-23. Quasi-fluxon bubble dynamics in a rapid oscillatory microwave field. https://doi.org/10.1016/j.physd.2025.134704

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