PHOTOEMISSION - A PROBE OF THE SURFACE AND BULK ELECTRONIC-STRUCTURE IN METALLIC ALLOYS

Many of the properties of metallic alloys are determined by the underl ying electronic structure, that is, the distribution of electrons in e nergy, space, and momentum, within the material. In order to understan d the properties of alloys, therefore, one seeks a realistic descripti on of the electron states, Sophisticated calculational schemes exist f or determining electronic structures, but it is important that results are compared with suitably discriminating experimental probes, such a s ultraviolet and x-ray photoelectron spectroscopy, This paper describ es recent work on Cu-Au and Fe-Ni alloys to demonstrate some applicati ons of photoemission as a probe of the surface and bulk electronic str uctures in metallic alloys.