Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system

F Novelli; G De Filippis; V Cataudella; M Esposito; I Vergara; F Cilento; E Sindici; A Amaricci; Claudio Giannetti; D Prabhakaran; S Wall; A Perucchi; S Dal Conte; G Cerullo; M Capone; A Mishchenko; M Grüninger; N Nagaosa; F Parmigiani; D. Fausti

doi:10.1038/ncomms6112

Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system

F Novelli, G De Filippis, V Cataudella, M Esposito, I Vergara, F Cilento, E Sindici, A Amaricci, Claudio Giannetti, D Prabhakaran, S Wall, A Perucchi, S Dal Conte, G Cerullo, M Capone, A Mishchenko, M Grüninger, N Nagaosa, F Parmigiani, D. Fausti^*

^*Autore corrispondente per questo lavoro

Risultato della ricerca: Contributo in rivista › Articolo › peer review

31 Citazioni (Scopus)

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	https://doi.org/10.1038/ncomms6112
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

Accesso al documento

10.1038/ncomms6112

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Novelli, F., De Filippis, G., Cataudella, V., Esposito, M., Vergara, I., Cilento, F., Sindici, E., Amaricci, A., Giannetti, C., Prabhakaran, D., Wall, S., Perucchi, A., Dal Conte, S., Cerullo, G., Capone, M., Mishchenko, A., Grüninger, M., Nagaosa, N., Parmigiani, F., & Fausti, D. (2014). Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system. Nature Communications, 5(N/A), N/A-N/A. https://doi.org/10.1038/ncomms6112

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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+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.",

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author = "F Novelli and {De Filippis}, G and V Cataudella and M Esposito and I Vergara and F Cilento and E Sindici and A Amaricci and Claudio Giannetti and D Prabhakaran and S Wall and A Perucchi and {Dal Conte}, S and G Cerullo and M Capone and A Mishchenko and M Gr{\"u}ninger and N Nagaosa and F Parmigiani and D. Fausti",

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Novelli, F, De Filippis, G, Cataudella, V, Esposito, M, Vergara, I, Cilento, F, Sindici, E, Amaricci, A, Giannetti, C, Prabhakaran, D, Wall, S, Perucchi, A, Dal Conte, S, Cerullo, G, Capone, M, Mishchenko, A, Grüninger, M, Nagaosa, N, Parmigiani, F & Fausti, D 2014, 'Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system', Nature Communications, vol. 5, n. N/A, pagg. N/A-N/A. https://doi.org/10.1038/ncomms6112

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AU - Novelli, F

AU - De Filippis, G

AU - Cataudella, V

AU - Esposito, M

AU - Vergara, I

AU - Cilento, F

AU - Sindici, E

AU - Amaricci, A

AU - Giannetti, Claudio

AU - Prabhakaran, D

AU - Wall, S

AU - Perucchi, A

AU - Dal Conte, S

AU - Cerullo, G

AU - Capone, M

AU - Mishchenko, A

AU - Grüninger, M

AU - Nagaosa, N

AU - Parmigiani, F

AU - Fausti, D.

PY - 2014

Y1 - 2014

N2 - 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.

AB - 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.

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Witnessing the formation and relaxation of dressed quasi-particles in a strongly correlated electron system

Abstract

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Keywords

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