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Publication Citation: Two-Phonon Infrared Spectra of Si and Ge: Calculating and Assigning Features

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Author(s): Eric L. Shirley; Hadley Lawler;
Title: Two-Phonon Infrared Spectra of Si and Ge: Calculating and Assigning Features
Published: August 16, 2007
Abstract: Third-order density-functional perturbation theory yields the terahertz/far-infrared absorption spectra for silicon and germanium, including all two-phonon combination and difference features. Temperature-dependent spectra are compared to available experimental results. Critical-point analysis is used to identify the branch and wave-vector indices of many features.
Citation: Physical Review B (Condensed Matter and Materials Physics)
Volume: 76
Issue: No. 5
Pages: 10 pp.
Keywords: absorption spectrum;critical point;germanium;phonon;silicon;terahertz
Research Areas:
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