Physics – Condensed Matter – Materials Science
Scientific paper
2011-12-09
Physics
Condensed Matter
Materials Science
10 pages, submitted to PRB
Scientific paper
We calculated the phonon dispersion relations of ZnX (X=Se, Te) employing ab initio techniques. These relations have been used to evaluate the temperature dependence of the respective specific heats of crystals with varied isotopic compositions. These results have been compared with mea- surements performed on crystals down to 2 K. The calculated and measured data are generally in excellent agreement with each other. Trends in the phonon dispersion relations and the correspond- ing densities of states for the zinc chalcogenide series of zincblende-type materials are discussed.
Cardona Manuel
Kremer Reinhard K.
Lauck Ronald
Romero Aldo H.
Siegle G.
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