Extended Data Fig. 1: Supporting DFT calculations.
From: An anomalous Hall effect in altermagnetic ruthenium dioxide
a, Strongly momentum-dependent spin-split Fermi surface calculated without spin-orbit interaction and with Hubbard U = 1.6 eV. b, Strong crystal-momentum resolved Berry curvature in RuO2 calculated with spin-orbit interaction included and magnetic moments along [110] corresponding to the intrinsic anomalous Hall conductivity vector along [110]. The black contours mark Fermi surface. c, Anomalous Hall conductivity vs. energy calculated for the Néel vector along [110] crystal axis. Zero energy corresponds to the Fermi level position in stoichiometric RuO2. d, Magnetocrystalline anisotropy energy (MAE) E[110]-E[001] vs. energy. e, Anomalous Hall conductivity dependence on Hubbard U. f, Corresponding dependence of the magnitude of the sublattice magnetic moment Hubbard U.
