Fig. 1: Sample structure.
From: Driving skyrmions in flow regime in synthetic ferrimagnets
a Schematics of the synthetic ferrimagnetic multilayers; high-angle annular dark-field (HAADF) scanning tunneling electron microscopy (STEM) images along with the energy-dispersive X-ray spectroscopy (EDX) mapping of the thin films (b, c): [Pt (1 nm)/Co(1 nm)/Tb(0.25 nm)]×5; (d, e): [Pt (1 nm)/Co(1 nm)/Tb(0.5 nm)]×5; and (f, g): [Pt (1 nm)/Co(1 nm)/Tb(1.0 nm)]×5. In the EDX images the green, red, and blue lines correspond to spectra associated to Pt, Co, and Tb, respectively.
