22 citations · 49 across the 16 of their papers we have counts for
5 papers · 1 filter
Ultrafast Strongly Anisotropic Valleytronics in SnSe
Yiming Pan, Sotirios Fragkos, Dominique Descamps +3
Valleytronics aims to control electrons in a valley-specific manner for quantum information manipulation. Due to their strong in-plane anisotropy, which enables polarization-contro…
Ultrafast Nonequilibrium Enhancement of Electron-Phonon Interaction in 2H-MoTe
Nina Girotto Erhardt, Sotirios Fragkos, Dominique Descamps +4
Understanding nonequilibrium electron-phonon interactions at the microscopic level and on ultrafast timescales is a central goal of modern condensed matter physics. Combining time-…
Electron-phonon-dominated charge-density-wave fluctuations in TiSe accessed by ultrafast nonequilibrium dynamics
Sotirios Fragkos, Hibiki Orio, Nina Girotto Erhardt +17
The complex phase diagram of 1T-TiSe2 consists of a charge density wave (CDW) below 200 K, and CDW fluctuations of still unknown origin at higher temperatures. Here, we use time-re…
Time- and Polarization-Resolved Extreme Ultraviolet Momentum Microscopy
Sotirios Fragkos, Quentin Courtade, Olena Tkach +7
We report the development of an instrument combining an ultrafast, high-repetition-rate, polarization-tunable monochromatic extreme ultraviolet (XUV, 21.6 eV) beamline and a next-g…
Control of intervalley scattering in BiTe via temperature-dependent band renormalization
A. Jabed, F. Goto, B. Frimpong +11
The control of out-of-equilibrium electron dynamics in topological insulators is essential to unlock their potential in next-generation quantum technologies. However, the role of t…