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JETP Letters

, Volume 84, Issue 3, pp 124–126 | Cite as

Infrared absorption by polar optical phonons in a CdS nanocrystal array consisting of quantum dots and quantum wires

  • A. I. Belogorokhov
  • I. A. Belogorokhov
  • M. I. Vasilevskiĭ
  • S. A. Gavrilov
  • R. P. Miranda
  • Th. Dittrich
  • D. R. Khokhlov
Article
  • 48 Downloads

Abstract

Based on the results of experimental studies, it is shown that, when the effect of size quantization on the vibratory properties of CdS nanocrystals is insignificant, the absorption spectra of nanocomposites containing CdS quantum wires and quantum dots exhibit not only the peak associated with the transverse optical phonons but also two other pronounced peaks associated with electrostatic vibration modes. When the size of nanocrystals is so small that the effect of size quantization cannot be neglected, the structure of the reflection and transmission spectra becomes much more complicated because of the contribution of the mixed longitudinal-transverse phonon modes.

PACS numbers

78.30.Fs 78.67.-n 

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Copyright information

© Pleiades Publishing, Inc. 2006

Authors and Affiliations

  • A. I. Belogorokhov
    • 1
  • I. A. Belogorokhov
    • 2
  • M. I. Vasilevskiĭ
    • 3
  • S. A. Gavrilov
    • 4
  • R. P. Miranda
    • 3
  • Th. Dittrich
    • 5
  • D. R. Khokhlov
    • 2
  1. 1.Giredmet State Federal Unitary EnterpriseMoscowRussia
  2. 2.Moscow State UniversityMoscowRussia
  3. 3.Centro de FísicaUniversidade do MinhoBragaPortugal
  4. 4.Moscow Institute for Electronic EngineeringTechnical UniversityZelenograd, Moscow regionRussia
  5. 5.Department of PhysicsTechnical University of MunichGarchingGermany

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