1984
DOI: 10.1002/pssb.2221230107
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Ellipsometric Investigation of Lattice Vibrations in Anisotropic Systems. α‐Quartz

Abstract: The ellipsometric equation for uniaxial crystals with the optic axis parallel to the reflecting surface is used to calculate the dielectric function from experimental data on a-quartz in the range 700 < < w < 1200 cm-l. The experimental arrangement as well as the mathematical procedure are presented. The results confirm the known mode frequencies including the selection rules and show above the influence of many-particle effects. The latter can be described approximately as for electronic spectra.Die ellipsome… Show more

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