Optical and magneto-optical properties of the strictly two dimensional systems – graphene
Vendredi 21 février 2014 14:00
- Duree : 2 heures
Lieu : LNCMI, Salle de conférences "René Pauthenet" (bâtiment J, 2ème étage) - 25 rue des martyrs - 38000 Grenoble
Orateur : Soutenance de Thèse de Przemyslaw LESZCYNSKI
Graphene is the best known example of a two dimensional crystal. The spatial confinement of carriers movement into a single atomic plane and their linear energy dispersion results in a multitude of unusual electronic properties. Despite an intense research in recent years, there are still some unanswered questions concerning the electron-phonon interaction effects in this system. Also, the stacking the graphene flakes with other two dimensional crystals is known to have beneficial effects on its electronic properties, but little is known how it affects its magneto-optical response. In my thesis, I present results of the micro-magneto-Raman scattering experiments that revealed new types of electron-phonon hybridization processes. I show how effects of electron-phonon interaction can be studied by resonantly switching it off and on. Finally, I present a significant improvement of the electronic quality of graphene deposited on BN, and how screening of electron-electron interaction affects its properties.
Contact : przemyslaw.leszczynski@lncmi.cnrs.fr
Discipline évènement : (Physique)
Entité organisatrice : (LNCMI)
Nature évènement : (Soutenance de thèse)
Site de l'évènement : Polygone scientifique
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