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Regensburg 2025 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 99: Ultrafast Electron Dynamics IV

Freitag, 21. März 2025, 10:30–13:00, H11

10:30 O 99.1 Large-amplitude coherent phonon dynamics in a van der Waals ferroelectric — •Jan Gerrit Horstmann, Quintin Meier, Thomas Lottermoser, and Manfred Fiebig
10:45 O 99.2 Giant acceleration of polaron transport by ultrafast laser-induced coherent phonon — •Huimin Wang, Xinbao Liu, Shiqi Hu, Daqiang Chen, Qing Chen, Cui Zhang, Mengxue Guan, and Sheng Meng
11:00 O 99.3 Ultrafast charge density wave, Van Hove singularity and flat-band dynamics in the Kagome metal CsV3Sb5 — •Mohamed Amine Wahada, Chris Nicholson, Andrea Capa Salinas, Brenden R. Ortiz, Lawson Lloyd, Tommaso Pincelli, Tulio de Castro, Martin Wolf, Ralph Ernstorfer, Stephen D. Wilson, and Laurenz Rettig
11:15 O 99.4 Ultrafast Nonequilibrium Dynamics of Room Temperature Charge Density Wave Fluctuations in 1T-TiSe2 — •Hibiki Orio, Samuel Beaulieu, Sarath Sasi, Akib Jabed, Muthu P.T. Masilamani, Maximilian Ünzelmann, Jan Minar, Friedrich Reinert, Kai Rossnagel, Sotirios Fragkos, and Jakub Schusser
11:30 O 99.5 Coherent phonons and quasiparticle renormalization in semimetals from first principles — •Christoph Emeis, Stephan Jauernik, Sunil Dahiya, Yiming Pan, Carl E. Jensen, Petra Hein, Michael Bauer, and Fabio Caruso
11:45 O 99.6 Ultrafast energy flow among electrons and phonons in a Pb/Si nanoscale heterosystem — •Christian Brand, Mohammad Tajik, Tobias Witte, Laurenz Rettig, Birk Finke, Björn Sothmann, Uwe Bovensiepen, and Michael Horn-von Hoegen
12:00 O 99.7 Resolving ultrafast atomic motion in WTe2 — •Hanqian Lu, Victoria C. A. Taylor, Hyein Jung, Jannik Malter, Ralph Ernstorfer, and Yoav W. Windsor
12:15 O 99.8 Structural dynamics of the silicon (111)-(7×7) surface upon optical excitation studied by ultrafast reflection high-energy electron diffraction — •Jonas Darius Fortmann, Birk Finke, Christian Brand, and Michael Horn-von Hoegen
12:30 O 99.9 Ultrafast imaging ellipsometry or interferometry - Which one is more suitable to measure the dielectric function of laser-excited materials? — •Markus Olbrich, Theo Pflug, Andy Engel, and Alexander Horn
12:45 O 99.10 Anisotropic electronic response in hexagonal boron nitride to laser excitations from real-time time-dependent density functional theory — •Cheng Wang, Markus E. Gruner, and Rossitza Pentcheva
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