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Emergent electric fields driven by phonon-coupled skyrmion resonances

Seno Aji*

  • Department of Physics, Faculty of Mathematics and Natural Sciences, Universitas Indonesia, Depok 16424, Indonesia

  • *Contact author: senji77@sci.ui.ac.id
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Phys. Rev. B 114, 074309 – Published 21 August, 2026

DOI: https://doi.org/10.1103/d751-kbdc

Abstract

We develop a coarse-grained theoretical description of the macroscopic emergent electric field generated by phonon-coupled lattice deformations in the breathing and rotational dynamics of a skyrmion lattice under microwave excitation. The analysis identifies the symmetry and dynamical conditions that yield rectified (dc) and oscillating (ac) electric fields, even in the absence of net translational motion of the skyrmion lattice, particularly in the dilute-lattice limit. Using experimentally measurable skyrmion profile parameters such as the equilibrium radius, domain-wall width, and dynamical resonance frequency of the skyrmion lattice, the model further enables identification of harmonic components contributing to the observed macroscopic electrodynamic response in the long-wavelength phonon limit (q→0) and at finite phonon frequency, providing a unified framework for phonon-driven spin-charge-lattice coupling in topological magnets.

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Phys. Rev. B 114, 074309– Published 21 August, 2026
  • Received 10 November 2025
  • Accepted 3 August 2026
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