Energy bandstructure of YB 12 and LuB 12

Because of the proper reference materials for a new valence fluctuating system, YbB ₁₂, self-consistent calculations of the energy bandstructure of YB ₁₂ and LuB ₁₂ are carried out by using the usual RAPW method. Some correction in the potential for the 4f state is necessary. The p-f mixing parameters are estimated to be (pf σ) = 0.015 Ryd and (pf π) = -0.005 Ryd.