Phonon dynamics of the Sn / Ge ( 1 1 1 )-( 3 3 ) surface

@inproceedings{Farasa2004PhononDO,
  title={Phonon dynamics of the Sn / Ge ( 1 1 1 )-( 3 3 ) surface},
  author={D. Farı́asa and W. Kamińskib and J. Loboa and J. Ortegab and E. Hulpked and R. P{\'e}rezb and F. Floresb and E. G. Michela},
  year={2004}
}
  • D. Farı́asa, W. Kamińskib, +5 authors E. G. Michela
  • Published 2004
We present a theoretical and experimental study on the phonon dynamics of the low-temperature Sn/Ge(1 1 1)-(3 3) structure. High-resolution helium atom scattering (HAS) data show that, besides the Rayleigh wave, there are three surface phonon branches with low dispersion related to the (3 3) surface phase. Their energies are approximately 6.5, 4, and 3 meVat the G point. In addition, we detect phonon peaks in the Q range 0.4–0.5 Å 1 at ~2 meV, which correspond to (3 3) folding of the Rayleigh… CONTINUE READING