1. Phonon spectroscopy of the low energy vibrations of interstitial oxygen in germanium
- Author
-
Kurt Laβmann, Markus Glaser, and Martin Gienger
- Subjects
Superconductivity ,Angular momentum ,Phonon scattering ,Phonon ,Chemistry ,chemistry.chemical_element ,Germanium ,General Chemistry ,Reduced mass ,Condensed Matter Physics ,Condensed Matter::Superconductivity ,Materials Chemistry ,Phononenspektroskopie , Sauerstoff , Germanium ,Atomic physics ,Ground state ,Spectroscopy - Abstract
In oxygen doped Ge we find by phonon spectroscopy with superconducting tunnelling junctions a series of lines between 0.18 meV and 4.08 meV which can be interpreted as due to low lying states of the interstitial oxygen (Oi) as a rigid rotator around a -axis slightly perturbed by the lattice potential. The sequence of transitions can be fit assuming a binding angle of (106 ± 1)° which is much smaller than the value of (162 ± 1)° for Oi in Si. Line shifts and splittings with uniaxial stress along , and are in qualitative agreement with this interpretation.
- Published
- 1993
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