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Infrared Electroreflectance of Zinc Oxide
Author(s) -
Lüth 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.19690330125
Subject(s) - infrared , electric field , zinc , polarization (electrochemistry) , phonon , materials science , condensed matter physics , far infrared , reflectivity , oxide , field (mathematics) , optics , chemistry , physics , quantum mechanics , metallurgy , mathematics , pure mathematics
Electroreflectance of ZnO is studied in the infrared spectral region (300 to 1000 cm −1 ) with light polarized ‖ c and ⊥ c An electric field E 3 ‖ c modifies the reflectivity near both edges of the reststrahlen band. Thus the infrared eigenfrequencies can be determined by this method. From the field‐induced shift of the eigenfrequencies “electric Grüneisen constants” are calculated. They represent a measure for the dependence of the phonon frequencies upon a change of polarization.