3 years ago

Magnetic skyrmion bubble motion driven by surface acoustic waves.

Rabindra Nepal, Utkan Güngördü, Alexey A. Kovalev

We study the dynamical control of a magnetic skyrmion bubble by using counter-propagating surface acoustic waves (SAWs) in a ferromagnet. First, we determine the bubble mass and derive the force due to SAWs acting on a magnetic bubble using Thiele's method. The force that pushes the bubble is proportional to the strain gradient for the major strain component. We then study the dynamical pinning and motion of magnetic bubbles by SAWs in a nanowire. In a disk geometry, we propose a SAWs-driven skyrmion bubble oscillator with two resonant frequencies.

Publisher URL: http://arxiv.org/abs/1711.03041

DOI: arXiv:1711.03041v1

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