Magnetic skyrmion bubble motion driven by surface acoustic waves

Authors

Rabindra Nepal, University of Nebraska-LincolnFollow
Utkan Güngördü, University of Nebraska-Lincoln
Alexey Kovalev, University of Nebraska - LncolnFollow

Date of this Version

2018

Citation

Appl. Phys. Lett. 112, 112404 (2018);

doi: 10.1063/1.5013620

Comments

Published by AIP Publishing.

Abstract

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.