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Acoustic waves in (001) InN-AlN and InN-GaN superlattices

Identifieur interne : 003472 ( Main/Repository ); précédent : 003471; suivant : 003473

Acoustic waves in (001) InN-AlN and InN-GaN superlattices

Auteurs : RBID : Pascal:11-0374812

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English descriptors

Abstract

We study the acoustic waves of (001) InN-AIN and InN-GaN superlattices. We obtain the dispersion curves for various symmetric and general orientations of the wavevector parallel to the interfaces. The results reveal the impact of the elastic anisotropy due to the zinc-blende structure of the constituent materials. It is found that for certain material parameters and orientations, the dispersion curves exhibit wide gaps with potential for the existence of surface localized waves.

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<div type="abstract" xml:lang="en">We study the acoustic waves of (001) InN-AIN and InN-GaN superlattices. We obtain the dispersion curves for various symmetric and general orientations of the wavevector parallel to the interfaces. The results reveal the impact of the elastic anisotropy due to the zinc-blende structure of the constituent materials. It is found that for certain material parameters and orientations, the dispersion curves exhibit wide gaps with potential for the existence of surface localized waves.</div>
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