Temperature dependence of In1−xGaxSb reflectivity in the far infrared
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AutoriNikolić, Pantelija M.
Paraskevopoulos, Konstantinos M.
Zorba, Triantafyllia T.
Vujatović, Stevan S.
Aleksić, Obrad S.
Blagojević, Vladimir D.
Nikolić, Maria Vesna
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Far infrared reflectivity spectra of polycrystalline In1−xGaxSb were measured and numerically analyzed using the classical dispersion formula and also a fitting procedure based on the modified plasmon-phonon interaction model in the temperature range from 10 K to 300 K. Optical parameters were calculated and discussed. A local mode belonging to the GaSb rich end and two-mode behavior were observed at low temperatures