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

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Copyright © 2016, Macmillan Publishers Limited

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(a) The isotropic exchange-interaction energy E₀(q′), (b) the Dzyaloshinskii-Moriya interaction energy ΔE_DM(q′) for O/Fe/Ir(001) as a function of oxygen coverage Θ varying between 0 and 1 ML. The results shown in (a) are obtained without SOC. (b) The slope of this odd part at E(q′) = 0 determines the sign and magnitude of DMI. The green and yellow lines for 0.5 ML correspond to () and () directions, while black and gray lines for 0 ML correspond to () and (), respectively.

Inline graphic — (a) The isotropic exchange-interaction energy E₀(q′), (b) the Dzyaloshinskii-Moriya interaction energy ΔE_DM(q′) for O/Fe/Ir(001) as a function of oxygen coverage Θ varying between 0 and 1 ML. The results shown in (a) are obtained without SOC. (b) The slope of this odd part at E(q′) = 0 determines the sign and magnitude of DMI. The green and yellow lines for 0.5 ML correspond to () and () directions, while black and gray lines for 0 ML correspond to () and (), respectively.