Fig. 3: Impact of kagomerization on the magnetic interactions and magnetic anisotropy energy (MAE).
From: Kagomerization of transition metal monolayers induced by two-dimensional hexagonal boron nitride
a-d Spatial distribution of the Heisenberg exchange interactions for the four considered structures in the Pt/Co system. The unit cell is shown by dashed black lines and contains three Co atoms in all cases. The Co atom shaded in gray is taken as the reference atom and the color of the surrounding circles indicates the value of J for the corresponding pair. The positive (negative) values correspond to ferromagnetic (antiferromagnetic) coupling. Shown are the a w/o-BN-Hex, b w/o-BN-Kagome, c w/-BN-Hex, and d w/-BN-Kagome structures. The small white and black circles represent N and B atoms, respectively. e-f Relative differences in J values of Pt/Co system for the structures with and without h-BN. e corresponds to c minus a. f corresponds to d minus b. Micromagnetic parameters: g Exchange stiffness tensor elements \({{{{{{{\mathcal{A}}}}}}}}_{xx}\); h DMI spiralization tensor elements \({{{{{{{\mathcal{D}}}}}}}}_{y}^{x}\). i MAE per magnetic atom. Positive (negative) values correspond to out-of-plane (in-plane) anisotropy.
