Skyrmions in FePt layers

Skyrmion magnetic structure of an ordered FePt monolayer deposited on Pt(111).
S. Polesya, S. Mankovsky, S. Bornemann, D. Ködderitzsch,1 J. Minár, and H. Ebert

Phys. Rev. B 89, 184414 (2014)

Magnetic moment distribution within the Skyrmion. Yellow and blue colors in (a) represent schematically the region giving gain and loss of Zeeman energy in the presence of a magnetic field; blue color in (b) shows the region giving loss of the exchange energy contributed by in-plane components of magnetic moments. (c) and (d): Structure of single Sk obtained with the contributions of the Fe-Pt exchange interactions taken into account [the same color code as in (a) and (b)].