Isotopic shifts of the low-energy excitations of interstitial oxygen in germanium

K. Laßmann, C. Linsenmaier, F. Maier, F. Zeller, E. E. Haller, K. M. Itoh, L. I. Khirunenko, B. Pajot, H. Müssig

Research output: Contribution to journalConference articlepeer-review

4 Citations (Scopus)


The rotational states of Oi in natural Ge as determined by phonon spectroscopy are found to be shifted in isotopically enriched Ge:Oi crystals. These shifts are larger than compatible with the line width in natural Ge if only the motion of the quasi-free Ge-O-Ge molecule is considered. Because of the reduced isotope scattering of the phonons in the enriched Ge the position of higher excited states could be determined. This allows to estimate the height of the axial potential barrier by extending to Ge:O the Yamada-Kaneta model for Si:O.

Original languageEnglish
Pages (from-to)384-387
Number of pages4
JournalPhysica B: Condensed Matter
Publication statusPublished - 1999 Mar
EventProceedings of the 1998 9th International Conference on Phonon Scattering in Condensed Matter, PHONONS 98 - Lancaster, Great Britain
Duration: 1998 Jul 261998 Jul 31

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Electrical and Electronic Engineering


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