Abstract
The non-equilibrium approach to correlated electron systems is often based on the paradigm that different degrees of freedom interact on different timescales. In this context, photo-excitation is 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 dynamics of quasi-particles in an archetypal strongly correlated charge-transfer insulator (La2CuO4+δ), we show that the interaction between electrons and bosons manifests 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 suddenly dressed by an ultrafast reaction of the bosonic field.
Lingua originale | Inglese |
---|---|
pagine (da-a) | N/A-N/A |
Rivista | Nature Communications |
Volume | 5 |
Numero di pubblicazione | N/A |
DOI | |
Stato di pubblicazione | Pubblicato - 2014 |
All Science Journal Classification (ASJC) codes
- Chimica Generale
- Biochimica, Genetica, Biologia Molecolare Generali
- Fisica e Astronomia Generali
Keywords
- correlated materials