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. 2016 Apr 22;6:24634. doi: 10.1038/srep24634

Figure 1. Competing magnetic exchange interactions and geometrical frustration in O/Fe/Ir(001).

Figure 1

(a) Sketch of p(2 × 2) unit cell centered with respect to the oxygen adlayer coverage (upper row) and the magnetic structure (lower row). (b) Total energy per Fe atom relative to the FM state of each oxygen coverage, (c) magnetic moment of Fe atom, size of magnetic moments of O and Ir are less then 0.1 μB, and (d) exchange constants as a function of O coverage on Fe/Ir(001).