|
|||||
|
|
Vibrational spectroscopy of InAs and AlAs quantum dot structures |
|
| Authors: | A. G. Milekhin A. I. Toropov A. K. Bakarov M. Yu. Ladanov G. Zanelatto J. C. Galzerani S. Schulze D. R. T. Zahn |
| Affiliation: | a Institute of Semiconductor Physics, Lavrentjev av.13, Novosibirsk 630090, Russia;b Departamento de Fisica, Universidade Federal de Sao Carlos, C.P.676, Sao Carlos, SP, Brazil;c Institut für Physik, Technische Universität Chemnitz, Chemnitz D-09107, Germany |
| Abstract: | In this paper we present an experimental comparative study of InAs/AlAs periodical structures with InAs and AlAs quantum dots (QDs) by means of infrared and Raman spectroscopies. The first observation of optical phonons localized in InAs and AlAs QDs using infrared spectroscopy is demonstrated. Confined optical phonon frequencies of the QDs measured by means of Raman scattering are compared with those deduced from the analysis of infrared spectra performed in the framework of the dielectric function approximation. |
| Keywords: | Author Keywords: Infrared spectroscopy Raman spectroscopy Phonons Quantum dots Confinement |
| 本文献已被 ScienceDirect 等数据库收录！ | |