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Polar propagating optical phonon states and their dispersive spectra in wurtzite nitride superlattices: Quantum size effect

Zhang, L ; Shao, Peng-Ming

Superlattices and Microstructures, 2010, Vol.48(6), pp.550-559 [Periódico revisado por pares]

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  • Título:
    Polar propagating optical phonon states and their dispersive spectra in wurtzite nitride superlattices: Quantum size effect
  • Autor: Zhang, L ; Shao, Peng-Ming
  • Assuntos: Propagating Phonon Modes ; Dispersive Spectra ; Wurtzite Superlattices ; Quantum Size Effect ; Chemistry ; Physics
  • É parte de: Superlattices and Microstructures, 2010, Vol.48(6), pp.550-559
  • Descrição: The polar optical phonon states of propagating (PR) modes in wurtzite GaN/Al Ga N superlattices (SLs) are investigated within the dielectric continuum model framework. It is proved that the PR phonon modes only appear in wurtzite GaN/Al Ga N SL with a small Al mole ratio concentration (such as ). The analytical phonon states of PR modes and their dispersive equation in the wurtzite GaN/Al Ga N SL structures are obtained. Numerical calculations on the dispersive spectra of PR modes and their electrostatic potential properties as well as the quantum size effect are performed for a wurtzite GaN/Al Ga N SL. Results reveal that dispersive curves of PR modes in SLs form frequency bands. As the well width of GaN well-layer increases, the frequency bands of...
  • Idioma: Inglês

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