Meron-like magnetic order in coupled discs

Direct Observation of Unconventional Topological Spin Structure in Coupled Magnetic Discs.
C. Phatak, A. K. Petford-Long, and O. Heinonen
Phys. Rev. Lett. 108, 067205 (2012)

(a) Schematic showing the spin structure of a meronlike state with opposite chirality; (b) schematic showing the trilayer discs and direction of the electron beam for imaging, and (c) LTEM under-focus image, and (d) reconstructed magnetic induction color map.