Novelli, Fabio ORCID: 0000-0002-0381-5585, De Filippis, Giulio, Cataudella, Vittorio ORCID: 0000-0002-1835-1429, Esposito, Martina, Vergara, Ignacio, Cilento, Federico ORCID: 0000-0002-4121-1694, Sindici, Enrico, Amaricci, Adriano ORCID: 0000-0003-0737-987X, Giannetti, Claudio ORCID: 0000-0003-2664-9492, Prabhakaran, Dharmalingam, Wall, Simon ORCID: 0000-0002-6136-0224, Perucchi, Andrea, Dal Conte, Stefano ORCID: 0000-0001-8582-3185, Cerullo, Giulio ORCID: 0000-0002-9534-2702, Capone, Massimo ORCID: 0000-0002-9811-5089, Mishchenko, Andrey, Grueninger, Markus, Nagaosa, Naoto, Parmigiani, Fulvio ORCID: 0000-0001-9529-7406 and Fausti, Daniele ORCID: 0000-0002-2142-9741 (2014). Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system. Nat. Commun., 5. LONDON: NATURE PUBLISHING GROUP. ISSN 2041-1723

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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+delta), 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.

Item Type: Journal Article
Creators:
CreatorsEmailORCIDORCID Put Code
Novelli, FabioUNSPECIFIEDorcid.org/0000-0002-0381-5585UNSPECIFIED
De Filippis, GiulioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cataudella, VittorioUNSPECIFIEDorcid.org/0000-0002-1835-1429UNSPECIFIED
Esposito, MartinaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Vergara, IgnacioUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Cilento, FedericoUNSPECIFIEDorcid.org/0000-0002-4121-1694UNSPECIFIED
Sindici, EnricoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Amaricci, AdrianoUNSPECIFIEDorcid.org/0000-0003-0737-987XUNSPECIFIED
Giannetti, ClaudioUNSPECIFIEDorcid.org/0000-0003-2664-9492UNSPECIFIED
Prabhakaran, DharmalingamUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Wall, SimonUNSPECIFIEDorcid.org/0000-0002-6136-0224UNSPECIFIED
Perucchi, AndreaUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Dal Conte, StefanoUNSPECIFIEDorcid.org/0000-0001-8582-3185UNSPECIFIED
Cerullo, GiulioUNSPECIFIEDorcid.org/0000-0002-9534-2702UNSPECIFIED
Capone, MassimoUNSPECIFIEDorcid.org/0000-0002-9811-5089UNSPECIFIED
Mishchenko, AndreyUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Grueninger, MarkusUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Nagaosa, NaotoUNSPECIFIEDUNSPECIFIEDUNSPECIFIED
Parmigiani, FulvioUNSPECIFIEDorcid.org/0000-0001-9529-7406UNSPECIFIED
Fausti, DanieleUNSPECIFIEDorcid.org/0000-0002-2142-9741UNSPECIFIED
URN: urn:nbn:de:hbz:38-428218
DOI: 10.1038/ncomms6112
Journal or Publication Title: Nat. Commun.
Volume: 5
Date: 2014
Publisher: NATURE PUBLISHING GROUP
Place of Publication: LONDON
ISSN: 2041-1723
Language: English
Faculty: Unspecified
Divisions: Unspecified
Subjects: no entry
Uncontrolled Keywords:
KeywordsLanguage
OPTICAL-EXCITATIONS; DEPENDENCE; TRANSITION; PHYSICS; STATEMultiple languages
Multidisciplinary SciencesMultiple languages
URI: http://kups.ub.uni-koeln.de/id/eprint/42821

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