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Articolul precedent |
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151 0 |
SM ISO690:2012 TIGINYANU, Ion, SARUA, Andrei, IRMER, Gert, MONECKE, Jochen, HUBBARD, Seth M., PAVLIDIS, Dimitris, VALIAEV, V.. Fröhlich modes in GaN columnar nanostructures. In: Physical Review B - Condensed Matter and Materials Physics, 2001, vol. 64, p. 0. ISSN 1098-0121. DOI: https://doi.org/10.1103/PhysRevB.64.233317 |
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Physical Review B - Condensed Matter and Materials Physics | ||||||
Volumul 64 / 2001 / ISSN 1098-0121 /ISSNe 1550-235X | ||||||
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DOI:https://doi.org/10.1103/PhysRevB.64.233317 | ||||||
Pag. 0-0 | ||||||
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GaN columnar nanostructures fabricated by electrochemical dissolution of bulk material have been studied by micro-Raman spectroscopy. The anodization induces an increase in the intensity of Raman scattering accompanied by a breakdown of the polarization selection rules and by the appearance of a new mode at (formula presented) i.e., in the frequency gap between the transverse optical and longitudinal optical bulk phonons. We present a Raman line-shape analysis based on the effective dielectric function of a composite that brings to light the Fröhlich character of this mode. |
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Cuvinte-cheie article, dissolution, electrochemical analysis, light scattering, nanoparticle, polarization, Raman spectrometry, structure analysis |
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