Anharmonic decay of phonons in semiconductors from first-principles calculations

Details Anharmonic decay of phonons in semiconductors from first-principles calculations Anharmonic decay of phonons in semiconductors from first-principles calculations

1994-08-18

arxiv.org/abs/cond-mat/9408051v1

Physics

Condensed Matter

4 pages, uuencoded, compressed POSTSCRIPT file (debernardi.ps.Z). To extract it, use uudecode and uncompress in turn, SISSA Re

Scientific paper

The anharmonic contribution to phonon lifetime and its temperature dependence
is calculated from first principle in C, Si and Ge using third-order
density-functional perturbation theory. Good agreement with available
experimental data is obtained. Different competing two-phonon decay channels
are compared and correlated with the density of final states.

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