Band Structure code

 Dear CCLers,
            I am interested in obtaining reasonable analytical  periodic
            electron densities  of  simple metals (Li,  Ca, etc)  in
 order to apply
            Bader's formalism to pure metallic crystals. However, it
            quite difficult  to find any solid state physics code that
 uses some
            flavor of Plane Wave  expansion.  Could anyone inform me
            any (freeware,  shareware, etc) code  or package meeting my
                                       | Oh, The cheapness of mindless
     Angel Martin Pendas               | calculation in modern age
     Professor of Chemistry            |
     Dpto. Quimica Fisica y Analitica. | Roger Penrose,
     Univ. de Oviedo                   | The Emperor's new mind
     33006 Oviedo. SPAIN               |
     e-mail: angel-: at
             angel-: at
      voice: (int) 34 8 5103037
        fax: (int) 34 8 5103125