(color online) Spatial distribution of spin density in relaxed (a) Al₁₅LiN₁₆, (b) Al₁₅NaN₁₆, (c) Al₁₅KN₁₆, (d) Al₁₅BeN₁₆, (e) Al₁₅MgN₁₆, (f) Al₁₅CaN₁₆. Yellow and blue isosurfaces correspond to the majority- and minority-spin densities. Pink and dark blue balls represent Al and N atoms, respectively. Position of the dopant atom is marked as green. The isosurface value of spin charge is 0.0007 e ⋅Å⁻³.