Ultrafast dynamics of vibronically dressed core-excitons in graphite: a femtosecond RIXS perspective
Published: Apr 17, 2025
Last Updated: Apr 17, 2025
Authors:Marco Malvestuto, Beatrice Volpato, Elena Babici, Richa Bhardwaj, Antonio Caretta, Simone Laterza, Fulvio Parmigiani, Michele Manfredda, Alberto Simoncig, Marco Zangrando, Alexander Demidovich, Peter Susnjar, Enrico Massimiliano Allaria, Alexander Darius Brynes, David Garzella, Luca Giannessi, Primoz Rebernik, Filippo Sottocorona, Dino Novko
Abstract
This study demonstrates one of the first implementations of time-resolved resonant inelastic X-ray scattering (tr-RIXS), marking a seminal extension of RIXS spectroscopy into the ultrafast time domain. By investigating the ultrafast dynamics of vibronically dressed core excitons in graphite using femtosecond X-ray pulses from a Free Electron Laser, we reveal previously inaccessible insights into the transient coupling between core excitons and specific optical phonon modes. Our approach establishes tr-RIXS as a powerful, transformative tool capable of elucidating the intricate interplay between electronic and lattice dynamics, opening new avenues in ultrafast materials research.