The possibility of existence of dynamical skyrmions with high precession frequency (ω ≥ ω0, where ω0 is the resonance frequency) in the two-dimensional classical ferromagnets with easy-axis anisotropy is investigated analytically. The results show that at the resonance frequency, the structure of a skyrmion looks like a vortex having energy increasing logarithmically with the size of the system. For ω > ω0, the skyrmion has a diameter that depends on the competition between the easy-axis anisotropy and the dynamical term. © 2002 Elsevier Science Ltd. All rights reserved.
Rocha-Filho, G. M., & Pereira, A. R. (2002). Dynamical skyrmions in Heisenberg two-dimensional easy-axis ferromagnets. Solid State Communications, 122(1–2), 83–87. https://doi.org/10.1016/S0038-1098(02)00045-5