Abstract
A brief review of the investigations of optical excitations in the bulk and on the surfaces of metals by the photofield emission method is presented. The selected results show that the method is very useful for detailed penetration of band structure near the Fermi level. Examples for bulk band structures and surface density of states of tungsten, tantalum and titanium are presented and compared with theoretical results. The residual gas effect on surface states is described and discussed. Taking into consideration the thermocurrent produced by light radiation, a new and more detailed presentation of surface states observed for titanium (0001) face is shown as the density of states. The method of energy distribution of photofield emitted electrons is briefly mentioned. The inverse and two-photon photoemission methods are mentioned.
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