Inverse photoemission spectra

A.J. Freeman, B.I. Min and M.R. Norman, Local density supercell theory ofphotoemission and inverse photoemission spectra 165... 

One way of measuring the gap G, in insulators, consists in superposing direct and inverse photoemission spectra (quasi-particle spectra of the compound), and recording the smallest energy difference between them. G is thus related to the ionization potential and electron affinity by ... 

Top right hand panel, inverse photoemission spectra of Sn02 as a function of increasing exposure to 500 eV argon ions at 5 mA/cm. (a) unexposed (b) Ihour exposure (b) 2 hour exposure (c) 3 hour exposure. In (d) the original spectrum is shown with dots emphasising the creation of new states centred 8 eV above the Fermi level. These are attributed to the empty 5s-5p hybrids shown in the central panel. Adapted from ref [214]. 

Left, Figure 3. Inverse photoemission spectra of YBa2CuX>6 showing the unoccupied states within 25 eV of the Fermi level. The density of states near EF is very low, but strong emission at 6.5 eV, 8.6 eV, and 14.0 eV corresponds to the Ba 5d-, Y 4d-, and Ba 4f-derived states, respectively. The inset compares the BIS spectrum for YBa2Cu306Q with that of Ba metal, with the latter shifted by 4.7 eV. 

Fig. 6. Inverse photoemission spectra recorded on single-domain K/Si( 100)2x1 (approx. 0.5 ML coverage) recorded for different incidence angles 0 along the F —/direction of the surface Brillouin zone. U2 corresponds to the unoccupied counterpart of F2 from Figure 5. From [91Joh].

Local density supercell theory of photoemission and inverse photoemission spectra, in Handbook on the Physics and Chemistry of Rare Earths, Vol. 10, eds K.A. Gschneidner Jr, L. Eyring and S. Hiifner (North-Holland, Amsterdam) ch. 65, p. 165. 

LOCAL DENSITY SUPERCELL THEORY OF PHOTOEMISSION AND INVERSE PHOTOEMISSION SPECTRA... 

Fig. 2. Photoemission and inverse-photoemission spectra of SrVOa and CaVOa in the V-3d hand region compared with an LDA hand-structure calculation hy Takegahara K (1994) J Electron Spectrosc Relat Phenon 66 303 after [11]...

Fig. 4.4 IPES (inverse photoemission) spectra of Cu(110)-O (9.7 eV) (Reprinted with permission from [26]) show the similar STS resonant features to that from the O-Nb(llO) surface [5]. Feature D is a direct transition in the bulk band structure, while S a surface state. Feature A is an oxygen-induced orbital. Oxygen attenuated peak at 2.0 eV represents the occupancy of the empty surface states by antibonding dipoles...

Figure 5.21 Inverse photoemission spectra, showing the downshift of an unoccupied Shockley surface state at about 2.3 eV above Ef in the Y band gap of Ni(llO) induced by the adsorption of H. The peak just above Ef is due to the unoccupied uppermost part of...

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