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DTSTART;VALUE=DATE:20240823T153000
DTEND;VALUE=DATE:20240823T153000
UID:16067@agenda.unifr.ch
DESCRIPTION:The study of solid-state materials out of equilibrium is a highly active \nresearch field in physics, encompassing both theoretical and \nexperimental approaches. The manipulation of electronic structures \nwith time-periodic light beams, as described by Floquet theory, gives rise \nto exciting phenomena. In this Master’s thesis, we implement Floquet \ntheory in three materials with distinct electronic properties: Graphene, \nknown for its Dirac cones with almost linear dispersion; Black \nPhosphorous, a semiconductor whose direct band gap size depends on \nthe sample thickness; and its monolayer version, Phosphorene. Using \nnumerical techniques, we explore various dynamical and topological \neffects, including the occupation of instantaneous Floquet states, the \nemergence of Berry curvature from gap openings in the band structure, \nand light-induced orbital magnetization of the material. By changing \nthe physical parameters of the periodic light beam, we can control \nthese effects on ultrafast timescales. Finally, we propose experimental \ntechniques that could potentially measure these predicted effects, \nproviding a pathway for future research.
SUMMARY:Exploring Floquet-induced orbital magnetization  and topological effects in two- and three dimensional materials
CATEGORIES:Soutenance de mémoire/thèse
LOCATION:PER 08\, 2.73\, Chemin du Musée 3\, 1700 Fribourg
URL;VALUE=URI:https://agenda.unifr.ch/e/fr/16067
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