Confined optical phonons in piezoelectric [311] GaInAs/AlAs superlattices probed by Raman scattering

G. ROZAS, M. F. PASCUAL WINTER, A. FAINSTEIN, B. JUSSERAND, AND P. O. VACCARO

Paris, Francia

Conferencia; 12th International Conference on Phonon Scattering in Condensed Matter “Phonons 2007”; 2007

We present a resonant Raman scattering investigation of optical phonons in strained Ga0.85In0.15As/AlAs superlattices grown along [001] and [311], the latter presenting built-in piezoelectric fields. The Raman configuration required to separate the deformation potential and Fr¨ohlich contributions to the scattering are described and evidenced in resonant and non-resonant experiments. built-in piezoelectric fields. The Raman configuration required to separate the deformation potential and Fr¨ohlich contributions to the scattering are described and evidenced in resonant and non-resonant experiments. 0.85In0.15As/AlAs superlattices grown along [001] and [311], the latter presenting built-in piezoelectric fields. The Raman configuration required to separate the deformation potential and Fr¨ohlich contributions to the scattering are described and evidenced in resonant and non-resonant experiments.