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Far-infrared laser spectroscopy of phonon difference band absorption in TlCl

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Lengfellner, Hans ; Rindt, R. ; Renk, Karl Friedrich
Date of publication of this fulltext: 08 Dec 2010 08:33


Far-infrared laser radiation is used to study the lattice absorption of a TlCl crystal over a large temperature range. We found a strong absorption band caused by phonon difference processes where longitudinal and transverse acoustic phonons with wave vectors at the Brillouin zone boundary are involved.

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