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Interpretation of Compositional Modulation Spectra to Determine Some Optical Properties of Alloys
Author(s) -
Enderlein R.,
Hummel R. E.,
Andrews J. B.,
NastasiAndrews R. J.,
Shanley C. W.
Publication year - 1978
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.2220880120
Subject(s) - spectral line , line (geometry) , modulation (music) , fermi gamma ray space telescope , enhanced data rates for gsm evolution , fermi level , condensed matter physics , interpretation (philosophy) , absorption edge , electronic band structure , band gap , materials science , fermi energy , physics , quantum mechanics , mathematics , geometry , telecommunications , computer science , acoustics , programming language , electron
A theory is developed for the line shape of compositional modulation spectra of alloys. Inter‐band transitions between d‐ and s‐band states just above the Fermi level are assumed. Rigid band shifts and changes of the Fermi energy with composition are considered. The calculated line shape reproduces remarkably well the experimental modulation spectra of copper based alloys in the vicinity of the fundamental absorption edge. From a line shape analysis of the experimental spectra the threshold energy for interband transitions and the lifetime broadening parameter can be obtained.