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Wave‐vector dependence of the electron energy losses of PbS, PbSe, and PbTe
Author(s) -
Büchner U.
Publication year - 1977
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.2220830216
Subject(s) - brillouin zone , electron , wave vector , condensed matter physics , anisotropy , dielectric , wave function , physics , materials science , atomic physics , optics , quantum mechanics
The wave‐vector( q ‐)dependence of electron energy losses of cubic PbS, PbSe, and PbTe up to q ‐values near the first Brillouin zone boundary and up to energies of 40 eV is given. Anisotropic effects of the derived energy loss functions Im [−ε(ω, q ( ijk ))] −1 and dielectric functions ε 2 (ω, q ( ijk ))[( ijk ) = (100), (110), (111)] are observed and discussed in terms of present band structure calculations.