Multiorbital correlated materials are often on the verge of multiple electronic phases (metallic, insulating, superconducting, charge and orbitally ordered), which can be explored and controlled by small changes of the external parameters. The use of ultrashort light pulses as a mean to transiently modify the band population is leading to fundamentally new results. In this paper we will review recent advances in the field and we will discuss the possibility of manipulating the orbital polarization in correlated multi-band solid state systems. This technique can provide new understanding of the ground state properties of many interesting classes of quantum materials and offers a new tool to induce transient emergent properties with no counterpart at equilibrium. We will address: the discovery of high-energy Mottness in superconducting copper oxides and its impact on our understanding of the cuprate phase diagram; the instability of the Mott insulating phase in photoexcited vanadium oxides; the manipulation of orbital-selective correlations in iron-based superconductors; the pumping of local electronic excitons and the consequent transient effective quasiparticle cooling in alkali-doped fullerides. Finally, we will discuss a novel route to manipulate the orbital polarization in a a k-resolved fashion.

Ronchi, A., Franceschini, P., Fanfarillo, L., Homm, P., Menghini, M., Peli, S., Ferrini, G., Banfi, F., Cilento, F., Damascelli, A., Parmigiani, F., Locquet, J., Fabrizio, M., Capone, M., Giannetti, C., Ultrafast orbital manipulation and Mott physics in multi-band correlated materials, Paper, in Proceedings of SPIE - The International Society for Optical Engineering, (SAN FRANCISCO, CA - USA, 29-31 January 2018), SPIE, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA 2018:<<PROCEEDINGS OF SPIE, THE INTERNATIONAL SOCIETY FOR OPTICAL ENGINEERING>>,10530 N/A-N/A. 10.1117/12.2284783 [http://hdl.handle.net/10807/132064]

Ultrafast orbital manipulation and Mott physics in multi-band correlated materials

Ronchi, Andrea
Primo
;
Franceschini, Paolo;Peli, Simone;Ferrini, Gabriele;Banfi, Francesco;Parmigiani, Fulvio;Giannetti, Claudio
Ultimo
2018

Abstract

Multiorbital correlated materials are often on the verge of multiple electronic phases (metallic, insulating, superconducting, charge and orbitally ordered), which can be explored and controlled by small changes of the external parameters. The use of ultrashort light pulses as a mean to transiently modify the band population is leading to fundamentally new results. In this paper we will review recent advances in the field and we will discuss the possibility of manipulating the orbital polarization in correlated multi-band solid state systems. This technique can provide new understanding of the ground state properties of many interesting classes of quantum materials and offers a new tool to induce transient emergent properties with no counterpart at equilibrium. We will address: the discovery of high-energy Mottness in superconducting copper oxides and its impact on our understanding of the cuprate phase diagram; the instability of the Mott insulating phase in photoexcited vanadium oxides; the manipulation of orbital-selective correlations in iron-based superconductors; the pumping of local electronic excitons and the consequent transient effective quasiparticle cooling in alkali-doped fullerides. Finally, we will discuss a novel route to manipulate the orbital polarization in a a k-resolved fashion.
Inglese
Proceedings of SPIE - The International Society for Optical Engineering
Ultrafast Phenomena and Nanophotonics XXII 2018
SAN FRANCISCO, CA - USA
Paper
29-gen-2018
31-gen-2018
9781510615458
SPIE
http://spie.org/x1848.xml
https://arxiv.org/abs/1801.07957
Ronchi, A., Franceschini, P., Fanfarillo, L., Homm, P., Menghini, M., Peli, S., Ferrini, G., Banfi, F., Cilento, F., Damascelli, A., Parmigiani, F., Locquet, J., Fabrizio, M., Capone, M., Giannetti, C., Ultrafast orbital manipulation and Mott physics in multi-band correlated materials, Paper, in Proceedings of SPIE - The International Society for Optical Engineering, (SAN FRANCISCO, CA - USA, 29-31 January 2018), SPIE, 1000 20TH ST, PO BOX 10, BELLINGHAM, WA 98227-0010 USA 2018:<>,10530 N/A-N/A. 10.1117/12.2284783 [http://hdl.handle.net/10807/132064]
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