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Resonant interaction between localized and extended vibrational modes in Si: O-18 under pressure

Hsu, L; McCluskey, MD and Lindström, Lennart LU (2003) In Physical Review Letters 90(9).
Abstract
The interaction between localized and extended vibrational modes in solids is of central importance in understanding how local vibrational modes decay into phonons. Interstitial oxygen (O-i) in silicon is a model system for studying such interactions. Using hydrostatic pressure, we have brought the antisymmetric stretch mode of O-18(i) in silicon into resonance with the second harmonic of the O-18(i) resonant mode. Infrared spectroscopy was used to observe an anticrossing between these two vibrational modes at pressures near 4 GPa. A model of the interaction between these modes produced excellent agreement with the experimentally observed frequencies and linewidths.
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author
organization
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type
Contribution to journal
publication status
published
subject
in
Physical Review Letters
volume
90
issue
9
publisher
American Physical Society
external identifiers
  • wos:000181443300031
  • scopus:84900813037
ISSN
1079-7114
DOI
language
English
LU publication?
yes
id
29d1570f-6007-49eb-be56-2cad9dd543dd (old id 316815)
date added to LUP
2007-09-13 12:01:55
date last changed
2018-05-29 12:10:12
@article{29d1570f-6007-49eb-be56-2cad9dd543dd,
  abstract     = {The interaction between localized and extended vibrational modes in solids is of central importance in understanding how local vibrational modes decay into phonons. Interstitial oxygen (O-i) in silicon is a model system for studying such interactions. Using hydrostatic pressure, we have brought the antisymmetric stretch mode of O-18(i) in silicon into resonance with the second harmonic of the O-18(i) resonant mode. Infrared spectroscopy was used to observe an anticrossing between these two vibrational modes at pressures near 4 GPa. A model of the interaction between these modes produced excellent agreement with the experimentally observed frequencies and linewidths.},
  articleno    = {095505},
  author       = {Hsu, L and McCluskey, MD and Lindström, Lennart},
  issn         = {1079-7114},
  language     = {eng},
  number       = {9},
  publisher    = {American Physical Society},
  series       = {Physical Review Letters},
  title        = {Resonant interaction between localized and extended vibrational modes in Si: O-18 under pressure},
  url          = {http://dx.doi.org/},
  volume       = {90},
  year         = {2003},
}