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UID:29804-1775224800-1775235600@www.chimieparistech.psl.eu
SUMMARY:Séminaire Programme Gradué Chimie PSL
DESCRIPTION:Friday April 3 at 2:00 pm (Paris time)\,  Room Charpak\, entrance building\, ground floor: \nMagneto-optical spectroscopy on van-der-Waals antiferromagnets and topological semimetals\, by F. Le Mardelé\, Laboratoire national des champs magnétiques intenses\, Toulouse.  \nMagneto-optical spectroscopy focuses on the interaction between light and matter\,with the magnetic field acting as a continuously adjustable external parameter. The magneto-optic response offers valuable information into the intrinsic properties of systems in their unperturbed states. As a historical example\, Landau-level spectroscopy has provided crucial insights into the electronic band structure of semiconductors and semimetals [1]. I will illustrate this point with my recent study on the low-energy excitations of TlBiSSe\, a textbook Dirac semimetal. Following this\, I will highlight the important role that magneto-optic plays in the ongoing research of van der Waals magnets. Specifically\, I will discuss the detection of a novel type of collective excitation\, called longitudinal magnons in FePSe3 and FePS3 followed by the study of the magnetic alloy Fe1−xNixPS3 in which magneto-optics allows us to track precisely the evolution of the magnetic properties with respect to the alloy composition.  \n[1] G. Landwehr and E. I. Rashba. Landau Level Spectroscopy. ISSN. Elsevier Science\, 2012. \n\nZoom link: https://espci.zoom.us/j/87330021501?pwd=zMkJRaEIVwXrMx0rPGDHJhHvG1obsL.1\nID: 873 3002 1501Passcode: 588393
URL:https://www.chimieparistech.psl.eu/evenement-agenda/seminaire-programme-gradue-chimie-psl-189/
LOCATION:évènement hybride
CATEGORIES:Séminaire
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