Premium
Dynamical Theory of the Optical and Energy Loss Properties of the Crystal Electron System
Author(s) -
Stolz H.
Publication year - 1969
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.19690320214
Subject(s) - electron , exciton , physics , crystal (programming language) , optical spectra , ideal (ethics) , particle system , particle (ecology) , energy exchange , condensed matter physics , spectral line , atomic physics , quantum mechanics , law , computer science , programming language , oceanography , operating system , atmospheric sciences , geology , political science
Applying many‐particle methods, a theory is presented of the optical and energy loss properties as revealed by ϵ(ω) and ϵ −1 (ω) for the system of interacting crystal electrons. The results are discussed for an ideal insulator and the different relations of the quantities ϵ(ω) and ϵ −1 (ω) to the two‐particle and collective excitations of the system are studied. Special attention is paid to the question of the relative positions of exciton peaks in the optical and the energy loss spectra and it is demonstrated that first‐order exchange processes only influence the positions of the latter and are of no appeal for the positions of the optical peaks.