Fig. 2: Weak altermagnetic LKSD in the nodal plane.
a, Bottom panel, measured soft X-ray (667 eV) ARPES band map at kz = 0 along kx (Γ–K path) on epitaxial thin-film MnTe. Top panel, corresponding one-step ARPES simulation. Dashed magenta line highlights an intense spectral weight around −3.5 eV binding energy corresponding to a resonance of Mn d states. b, Measured ARPES band map along kx (Γ–K1 path) after filtering out the intense spectral weight owing to the Mn d-state resonance. Inset, refinement of the measured data by curvature mapping. Bottom panel, ab initio bands, with red and blue colours corresponding to opposite z components of spin. The Néel vector is aligned along the Γ–M2 direction in the calculations. c, Same as b along ky (Γ–M1 path). d, Constant-energy map obtained by integrating the measured data over a 50-meV binding-energy interval from the top of the valence band. All soft X-ray ARPES experiments were performed at 15 K.
