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Acoustic phonon transmission spectra in piezoelectric AlN/GaN Fibonacci phononic crystals

Listed author(s):
  • P. D. Sesion
  • E. L. Albuquerque


  • C. Chesman
  • V. N. Freire
Registered author(s):

    We study the acoustic-phonon transmission spectra in periodic and quasiperiodic (Fibonacci type) superlattices made up from the III-V nitride materials AlN and GaN. The phonon dynamics is described by a coupled elastic and electromagnetic equations within the static field approximation model, stressing the importance of the piezoelectric polarization field in a strained condition. We use a transfer-matrix treatment to simplify the algebra, which would be otherwise quite complicated, allowing a neat analytical expressions for the phonon transmission coefficients. Numerical results, for the normal incidence case, show a strike self-similar pattern for both hexagonal (class 6 mm) and cubic symmetries crystalizations of the nitrides. Copyright EDP Sciences/Società Italiana di Fisica/Springer-Verlag 2007

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    Article provided by Springer & EDP Sciences in its journal The European Physical Journal B.

    Volume (Year): 58 (2007)
    Issue (Month): 4 (08)
    Pages: 379-387

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    Handle: RePEc:spr:eurphb:v:58:y:2007:i:4:p:379-387
    DOI: 10.1140/epjb/e2007-00249-5
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