Fig. 3: Deformation of chiral bobber/skyrmion tube caused by the nonuniform distribution of spin-wave intensity in the thickness direction.
From: Spin-wave-driven tornado-like dynamics of three-dimensional topological magnetic textures
a Dispersion relations of the spin waves in the ky = 0 plane. The closed curves in the kx − kz plane correspond to the projections of the isofrequency contours at f = 5, 15, 30, 60, and 120 GHz. b An instantaneous magnetization plot of the spin waves in the x−z plane at hrf = 0.1 T. The color bar represents the x component of the magnetization. c The schematic of force analysis for the skyrmions in neighboring layers, S1 and S2, with strong and negligible driving force Fdrive, respectively. FM represents the Magnus force perpendicular to the velocity v and the purple spring stands for the attractive interaction between the skyrmions. d The spatial profile of the skyrmion positions in the y−z plane under the driving field hrf = 0.1 T. The orange areas indicate the regions of high-intensity spin waves.
