Fig. 2: Magnetic interactions among magnetic adatoms on Nb(110).
From: Topological magnetism in diluted artificial adatom lattices
a, d, g Heisenberg exchange interactions among Cr, Mn, and Fe atoms as a function of the distance for both lattices (A) in cyan, (B) in purple, with the DMI values in inset. b, c, e, f, h, i Illustration of the simulated lattices, where each circle is colored as a function of the size of J with respect to the central atom (gray color). The positive (negative) values correspond to FM (AFM) coupling.
