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

Sesion Júnior, P.D.; Albuquerque, E.L.; Feitosa, Carlos Chesman de Araújo; Freire, V.N.

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

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dc.contributor.author	Sesion Júnior, P.D.
dc.contributor.author	Albuquerque, E.L.
dc.contributor.author	Feitosa, Carlos Chesman de Araújo
dc.contributor.author	Freire, V.N.
dc.date.accessioned	2020-07-03T13:53:17Z
dc.date.available	2020-07-03T13:53:17Z
dc.date.issued	2007-09-22
dc.description.resumo	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	pt_BR
dc.identifier.citation	SESION, P. ; ALBUQUERQUE, Eudenilson Lins de ; CHESMAN C. ; FREIRE, Valder . Acoustic phonon transmission spectra in piezoelectric AlN/GaN Fibonacci phononic crystals. European Physical Journal B, v. 58, p. 379-387, 2007. Disponível em: https://link.springer.com/article/10.1140/epjb/e2007-00249-5. Acesso em: 17 maio 2020. http://doi.org/10.1140/epjb/e2007-00249-5	pt_BR
dc.identifier.doi	10.1140/epjb/e2007-00249-5
dc.identifier.issn	1434-6036
dc.identifier.uri	https://repositorio.ufrn.br/jspui/handle/123456789/29427
dc.language	en	pt_BR
dc.publisher	Springer Verlag	pt_BR
dc.subject	Não tem	pt_BR
dc.title	Acoustic phonon transmission spectra in piezoelectric AlN/GaN Fibonacci phononic crystals	pt_BR
dc.type	article	pt_BR