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MuMax simulations of coupled disks, in which two Permalloy disks are interacting with each other across a connecting nanomagnet. (A) the magnetization in the disks corresponds to an anti-vortex (disk 1) and a soliton free state (disk 2) corresponding to their respective boundary s with W= −1 and W= 0 respectively. (B) Boundary for disk 2 changed to have W= +1 – a vortex is now stabilized.
