UNIGE document Scientific Article
previous document  unige:2776  next document
add to browser collection
Title

Transition from surface vibrations to liquidlike dynamics at an incompletely melted semiconductor surface

Authors
Takeuchi, N.
Tosatti, Erio
Published in Physical Review. B, Condensed Matter. 1997, vol. 55, no. 23, p. 15405-15407
Abstract We present results of a first-principles molecular-dynamics simulation of the vibrational spectrum of a model semiconductor surface where, close to the bulk melting temperature TM, the top bilayer becomes diffusive. The specific example chosen is Ge(111). In place of the ordinary surface vibrations, we obtain a spectrum more akin to that of a confined liquid. In particular, we predict a dramatic decrease in the intensity of high-frequency (bond-stretching) surface mode intensity, associated with a local melting-induced breaking of hard covalent bonds in the top bilayer.
Identifiers
Full text
Article (Published version) (89 Kb) - document accessible for UNIGE members only Limited access to UNIGE
Other version: http://prola.aps.org/pdf/PRB/v55/i23/p15405_1
Structures
Research group Groupe Weber
Citation
(ISO format)
TAKEUCHI, N., SELLONI, Annabella, TOSATTI, Erio. Transition from surface vibrations to liquidlike dynamics at an incompletely melted semiconductor surface. In: Physical Review. B, Condensed Matter, 1997, vol. 55, n° 23, p. 15405-15407. https://archive-ouverte.unige.ch/unige:2776

183 hits

1 download

Update

Deposited on : 2009-09-21

Export document
Format :
Citation style :