Premium
Optical Properties and Collective Excitations in GaSe in the 2 to 80 eV Range
Author(s) -
Mamy R.,
Martix L.,
Leveque G.,
Raisin C.
Publication year - 1974
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2220620120
Subject(s) - excited state , electron , atomic physics , excitation , range (aeronautics) , plasmon , valence electron , quasiparticle , valence (chemistry) , physics , materials science , condensed matter physics , optics , quantum mechanics , superconductivity , composite material
Optical functions of GaSc are derived from the Kramers‐Kronig analysis of reflectivity data performed at quasi‐normal incidence and at room temperature in the 2 to 80 eV range. Attempts of interpretation are suggested according to recent band structure calculations. In the experimental range, all the valence electrons are excited. On the high energy side, some structure corresponds to the excitation of 3d‐electrons of Ga and Se, respectively. The calculated position of the plasmon peak is in good agreement with energy loss experiments.