2014/03/07 by Fabio Novelli, G. De Filippis, Giulio De Filippis +26 · 1 citation
Materials Science · Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic physics #Boson #Condensed matter physics #Context (archaeology) #Degrees of freedom (physics and chemistry) #Electron #Excitation #Hamiltonian (control theory) #Hubbard model #Magnetic and transport properties of perovskites and related materials #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Relaxation (psychology) #Superconductivity #Ultrashort pulse #cond-mat.str-el
paper · pdf · doi:10.1038/ncomms6112
published as Nature Communications 5, Article number: 5112, 2014
arxiv created 2014/03/07 · openalex publication_date 2014/10/07 · arxiv updated 2014/12/04 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/06
The non-equilibrium semiconductors physics is based on the paradigm that different degrees of freedom interact on different timescales. In this context the photo-excitation is often treated as an impulsive injection of electronic energy that is transferred to other degrees of freedom only at later times. Here, by studying the ultrafast particles dynamics in a archetypal strongly correlated charge-transfer insulator (La2CuO4), we show that the interaction between electrons and bosons manifest itself directly in the photo-excitation processes of a correlated material. With the aid of a general theoretical framework (Hubbard Holstein Hamiltonian), we reveal that sub-gap excitation pilots the formation of itinerant quasi-particles which are suddently dressed (<100 fs) by an ultrafast reaction of the bosonic field.