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Synthèse et propriétés de monocristaux, de poudres, films minces ou hétérostructures

Etudes à l'interface avec la matière biologique

> LMGP_ Recherche > Nano

Publication d'Eirini Sariginannidou 2017

Publié le 14 juin 2017
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Communiqué du 13 juin 2017 au 21 juin 2017

Le papier "Al4SiC4 vibrational properties: density functional theory calculations compared to Raman and infrared spectroscopy measurements" a été publié dans Journal of Raman Spectroscopy

Ici  vous trouverez le papier d'Eirni Sarigiannidou

"Al4SiC4 is a new semiconductor with numerous potential technological applications. We report here the first thorough experimental Raman and Infrared (IR) investigation of vibrational properties of Al4SiC4 single crystals grown by high temperature solution growth method. The experimental results are compared with the full theoretical analysis of vibrational properties based on Density Functional Theory calculations that are revisited here. We have obtained a good agreement between the experimental and calculated Raman phonon modes, and this allowed the symmetry assignment of all the measured Raman modes. We have revisited the Density Functional Theory calculation of the IR active phonon modes and our results for LO-TO splitting indicate a substantial decrease of ΔωLO − TO compared with the previous reported calculation. Moreover, most of the IR modes have been symmetry assigned from the comparison of the experimental IR spectra with the corresponding Raman spectra and the Al4SiC4 calculated phonon modes."


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mise à jour le 16 octobre 2019

  • Tutelle CNRS
  • Tutelle Grenoble INP
Université Grenoble Alpes