کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
7934503 1512892 2014 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Study of phonons in self-assembled InAs quantum dots embedded in an InGaAlAs matrix
موضوعات مرتبط
مهندسی و علوم پایه مهندسی مواد مواد الکترونیکی، نوری و مغناطیسی
پیش نمایش صفحه اول مقاله
Study of phonons in self-assembled InAs quantum dots embedded in an InGaAlAs matrix
چکیده انگلیسی
We studied phonon modes propagating along the [3 1 1] direction in highly ordered, stacked InAs QDs embedded in an InGaAlAs matrix grown on InP(3 1 1) substrate by Raman spectroscopy. The Raman spectra showed clear doublets of folded quasi-longitudinal modes which have mixed transverse and longitudinal character. A broad feature observed in the Raman spectra was attributed to superposition of densely folded and/or confined phonon modes that is with agreement with our previous theoretical calculation. The phonon gap was observed and compared with our theoretical calculations.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica E: Low-dimensional Systems and Nanostructures - Volume 57, March 2014, Pages 1-5
نویسندگان
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