Author
Listed:
- Fabio Novelli
(Università degli Studi di Trieste, Via Valerio 2, 34127 Trieste, Italy
Elettra—Sincrotrone Trieste S.C.p.A.)
- Giulio De Filippis
(Università di Napoli Federico II)
- Vittorio Cataudella
(Università di Napoli Federico II)
- Martina Esposito
(Università degli Studi di Trieste, Via Valerio 2, 34127 Trieste, Italy)
- Ignacio Vergara
(II. Physikalisches Institut, Universität zu Köln)
- Federico Cilento
(Elettra—Sincrotrone Trieste S.C.p.A.)
- Enrico Sindici
(Università degli Studi di Trieste, Via Valerio 2, 34127 Trieste, Italy)
- Adriano Amaricci
(CNR-IOM Democritos National Simulation Center and Scuola Internazionale Superiore di Studi Avanzati (SISSA))
- Claudio Giannetti
(I-LAMP (Interdisciplinary Laboratories for Advanced Materials Physics), Università Cattolica del Sacro Cuore
Università Cattolica del Sacro Cuore)
- Dharmalingam Prabhakaran
(University of Oxford)
- Simon Wall
(ICFO-Institut de Ciencies Fotoniques)
- Andrea Perucchi
(Elettra—Sincrotrone Trieste S.C.p.A.
INSTM UdR Trieste-ST, 34149 Basovizza, Italy)
- Stefano Dal Conte
(IFN-CNR, Politecnico di Milano)
- Giulio Cerullo
(IFN-CNR, Politecnico di Milano)
- Massimo Capone
(CNR-IOM Democritos National Simulation Center and Scuola Internazionale Superiore di Studi Avanzati (SISSA))
- Andrey Mishchenko
(RIKEN Center for Emergent Matter Science (CEMS)
RRC ‘Kurchatov Institute’)
- Markus Grüninger
(II. Physikalisches Institut, Universität zu Köln)
- Naoto Nagaosa
(RIKEN Center for Emergent Matter Science (CEMS)
University of Tokyo)
- Fulvio Parmigiani
(Università degli Studi di Trieste, Via Valerio 2, 34127 Trieste, Italy
Elettra—Sincrotrone Trieste S.C.p.A.
II. Physikalisches Institut, Universität zu Köln)
- Daniele Fausti
(Università degli Studi di Trieste, Via Valerio 2, 34127 Trieste, Italy
Elettra—Sincrotrone Trieste S.C.p.A.)
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.
Suggested Citation
Fabio Novelli & Giulio De Filippis & Vittorio Cataudella & Martina Esposito & Ignacio Vergara & Federico Cilento & Enrico Sindici & Adriano Amaricci & Claudio Giannetti & Dharmalingam Prabhakaran & Si, 2014.
"Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system,"
Nature Communications, Nature, vol. 5(1), pages 1-8, December.
Handle:
RePEc:nat:natcom:v:5:y:2014:i:1:d:10.1038_ncomms6112
DOI: 10.1038/ncomms6112
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