Photoemission experiments on the valence band of transition metal trichalcogenides

Presents a synchrotron radiation photoemission study of the upper-valence-band states of four ZrSe<sub>3</sub>-structure compounds: ZrS<sub>3</sub>, ZrSe<sub>3</sub>, ZrTe<sub>3</sub> and HfSe<sub>3</sub>. The sulphide and selenide spectra exhibit a characteristic five-peak structure in agreement with the calculated ZrSe<sub>3</sub> density of states by Myron et al. (1981) and by Bullett (1979). The nature of these features is established by an interplay between the rehybridization of paired-anion ligand orbitals and the hybridization of unpaired-anion states with cation states. The spectrum of ZrTe<sub>3</sub> exhibits only three peaks that appear related to three of the sulphide and selenide spectral features. The differences between the sulphide, selenide spectra and the telluride spectra are discussed in terms of the very large distance between paired-anion ligands and neighbour cations in the latter compound


Published in:
Nuovo Cimento D, 1D, 4, 549-59
Year:
1982
Keywords:
Note:
Dept. of Phys., Univ. of Wisconsin, Madison, WI, USA
Copyright 1982, IEE
1958155
0392-6737
valence band
transition metal trichalcogenides
synchrotron radiation photoemission study
ZrS3
ZrSe3
ZrTe3
HfSe3
density of states
rehybridization
paired-anion ligand orbitals
hybridization
unpaired-anion states
cation states
Laboratories:




 Record created 2006-10-03, last modified 2018-03-18


Rate this document:

Rate this document:
1
2
3
 
(Not yet reviewed)