K. Szamotasadowska et al., INFLUENCE OF YB ON VALENCE-BAND DENSITY-OF-STATES OF CDYBTE AND PBYBTE - A RESONANT PHOTOEMISSION-STUDY, Acta Physica Polonica. A, 90(5), 1996, pp. 943-946
Photoemission measurements using synchrotron radiation were performed
on PbYbTe (bulk crystal) and CdYbTe (MBE thin film). The resonant enha
ncement of the photoemission was applied for investigation of the cont
ribution of Yb 4f electrons to the valence band. The set of the energy
distribution curves was collected for energies in the region close to
the 4d-4f Fano transition. The Yb 4f(14) were observed at the binding
energies close to the edge of the valence band while the 4f(13) state
s were revealed deep in the valence band.