7 papers
Fluctuation-driven multi-step charge density wave transition in monolayer TiSe
Luka BeniÄ, Dino Novko, Ivor LonÄariÄ
The exact microscopic origin, symmetry, and thermal melting mechanism of the charge density wave (CDW) phase in TiSe remain a subject of intense debate, particularly regardin…
Unconventional plasmon dynamics due to strong correlations in SrRuO
Juraj Krsnik, Dino Novko, Fabian B. Kugler +2
Plasmon modes, their dispersion, and the onset of damping when approaching the electron-hole continuum are well understood when electron correlations are weak. However, we know lit…
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…
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-…
Machine learning model for efficient nonthermal tuning of the charge density wave in monolayer NbSe
Luka BeniÄ, Federico Grasselli, Chiheb Ben Mahmoud +2
Understanding and controlling the charge density wave (CDW) phase diagram of transition metal dichalcogenides is a long-studied problem in condensed matter physics. However, due to…
Ultrafast dynamics of vibronically dressed core-excitons in graphite: a femtosecond RIXS perspective
Marco Malvestuto, Beatrice Volpato, Elena Babici +16
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 u…