ANGLE-RESOLVED PHOTOEMISSION-STUDY OF THE SURFACE ELECTRONIC-STRUCTURE ON NDB6(110) CLEAN SURFACE

We carried out an angle-resolved photoemission study of the NdB6, (110 ) clean surface in order to investigate the surface electronic structu re. From the exciting photon energy dependence and the crud test, we f ound additional peaks corresponding to the surface states on the NdB6 (110) surface. The dispersion relations of these surface states were d etermined along the <(Gamma)over bar>-(M) over bar symmetry line in th e surface Brillouin zone. It was found that the energy dispersion for the present surface state is about 250 meV. From these results, we dis cuss in detail the surface electronic structure of the NdB6 (110) clea n surface. (C) 1998 Elsevier Science B.V.