摘要: The one-electron wave functions for the $d$ band of body-centered iron are examined and found to have significantly different character, depending on their energy location in band. bottom is associated with diffuse functions, while top more compact atomic-like functions. A smooth transition from one behavior other occurs as varied. This gives substantiation recent descriptions metals which been based "low $d$" assignments; here this explained basis that a significant fraction electrons solid do not "look" like atomic at all.