期刊
PHYSICS LETTERS A
卷 373, 期 32, 页码 2882-2886出版社
ELSEVIER
DOI: 10.1016/j.physleta.2009.06.005
关键词
Raman spectroscopy; Silicon nanostructures; Phonon confinement effect
资金
- Council of Scientific and Industrial Research (CSIR), India
We report here microscopic process involved in the photo-excited Fano interaction due to nonlinear process in the silicon nanostructures. Photo-excited Raman line-shapes are investigated to reveal the presence of nonlinear Fano interaction in the silicon nanostructures for three different sizes. The Fano interaction is found to be more prominent due to the phase matching between electronic and phonon Raman scatterings for smaller sized nanostructures. Phase matching is achieved by nonlinear process of two-wave mixing in the silicon nanostructures followed by the formation of electron-phonon bound state. (C) 2009 Elsevier B.V. All rights reserved.
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