Publikation:

Umklapp process in observation of coherent folded longitudinal acoustic phonons in a GaAs/AlAs long-period superlattice

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2004

Autor:innen

Mizoguchi, Kohji
Hino, T.
Nakayama, Masaaki
Kurz, Heinrich
Nakashima, S.

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http://nbn-resolving.de/urn:nbn:de:bsz:352-opus-45531
DOI (zitierfähiger Link)
https://doi.org/10.1016/j.physe.2003.11.096
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Attribution-NonCommercial-NoDerivs 2.0 Generic

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Open Access Green

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Physik: Publikationen
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Published

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Physica E: Low-dimensional Systems and Nanostructures. 2004, 21(2-4), pp. 646-650. ISSN 1386-9477. Available under: doi: 10.1016/j.physe.2003.11.096

Zusammenfassung

Coherent folded longitudinal acoustic phonons in a GaAs/AlAs long-period superlattice (SL) have been investigated by using a reflection-type two-color pump probe technique under the condition that the wave vector of the probe pulse in the sample exceeds the mini-Brillouin zone. The coherent oscillations observed in the time-domain signals indicate the propagation of the phonon wave packet through the whole SL layer. The Fourier transform spectrum of the time-domain signals is compared with the dispersion relation of the folded longitudinal acoustic phonons in the long-period SL calculated using a transfer matrix method on the bases of an elastic continuum model. This comparison indicates that the folded longitudinal acoustic phonons in the long-period SL are observed through the umklapp process.

Zusammenfassung in einer weiteren Sprache

Fachgebiet (DDC)
530 Physik

Schlagwörter

coherent phonons, umklapp process, GaAs/AlAs superlattice

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ISO 690MIZOGUCHI, Kohji, T. HINO, Masaaki NAKAYAMA, Thomas DEKORSY, Albrecht BARTELS, Heinrich KURZ, S. NAKASHIMA, 2004. Umklapp process in observation of coherent folded longitudinal acoustic phonons in a GaAs/AlAs long-period superlattice. In: Physica E: Low-dimensional Systems and Nanostructures. 2004, 21(2-4), pp. 646-650. ISSN 1386-9477. Available under: doi: 10.1016/j.physe.2003.11.096
BibTex
@article{Mizoguchi2004-03Umkla-8854,
  year={2004},
  doi={10.1016/j.physe.2003.11.096},
  title={Umklapp process in observation of coherent folded longitudinal acoustic phonons in a GaAs/AlAs long-period superlattice},
  number={2-4},
  volume={21},
  issn={1386-9477},
  journal={Physica E: Low-dimensional Systems and Nanostructures},
  pages={646--650},
  author={Mizoguchi, Kohji and Hino, T. and Nakayama, Masaaki and Dekorsy, Thomas and Bartels, Albrecht and Kurz, Heinrich and Nakashima, S.}
}
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