3 papers
physics.chem-ph2024
Excimer Formation in Zinc-phthalocyanine Revealed using Ultrafast Electron Diffraction
Sebastian Hammer, Tristan L. Britt, Laurenz Kremeyer +4
The formation of excited dimer states, so called excimers, is an important phenomenon in many organic molecular semiconductors. In contrast to Frenkel exciton-polaron excited state…
cond-mat.mes-hall2024
Ultrafast Electron Diffuse Scattering as a Tool for Studying Phonon Transport: Phonon Hydrodynamics and Second Sound Oscillations
Laurenz Kremeyer, Tristan L. Britt, Bradley J. Siwick +1
Hydrodynamic phonon transport phenomena, like second sound, have been observed in liquid Helium more than 50 years ago. More recently second sound has been observed in graphite at…
cond-mat.mtrl-sci2024
A momentum-resolved view of polaron formation in materials
Tristan L Britt, Fabio Caruso, Bradley J Siwick
A combined experimental and computational methodology for interrogating the phonon contribution to polaron formation in real materials is developed. Using LiF as an example, we sho…