Insensitivity to selection rules of two-phonon luminscence spectra

G. A. Thomas, M. Capizzi, W. Weber, E. I. Blount, M. Lax

Research output: Contribution to journalArticlepeer-review

5 Scopus citations


Analysis of newly detected luminescence lines in germanium indicates that two-phonon recombination processes in indirect-gap semiconductors are insensitive to selection-rule constraints, although such restrictions generally play a crucial role in the optical properties of semiconductors. The two-phonon replicas of electron-hole recombination lines are found to be constituted from well-defined groups of phonons whose momenta differ from points of high symmetry in the Brillouin zone.

Original languageEnglish (US)
Pages (from-to)1000-1003
Number of pages4
JournalPhysical Review Letters
Issue number15
StatePublished - 1976
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • General Physics and Astronomy


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