Confined acoustic and propagating optical phonons in GaN/Ga1-xAlxN superlattices

Raman scattering by folded acoustic phon

Raman scattering by folded acoustic phonons in InGaN/GaN superlattices

✍ J. Ibáñez; A. Rapaport; C. Boney; R. Oliva; R. Cuscó; A. Bensaoula; L. Artús 📂 Article 📅 2011 🏛 John Wiley and Sons 🌐 English ⚖ 140 KB

## Abstract We use Raman scattering to investigate the folded longitudinal acoustic (LA) phonons in a series of In~__x__~Ga~1−__x__~N/GaN superlattices (SLs) grown by molecular beam epitaxy with different compositions (15% < __x__ < 38%) and SL periods (from 8 to 20 nm). A novel, ultralow wavenumbe