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Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material

The study of photoexcited strongly correlated materials is attracting growing interest since their rich phase diagram often translates into an equally rich out-of-equilibrium behaviour. With femtosecond optical pulses, electronic and lattice degrees of freedom can be transiently decoupled, giving th...

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Autores principales: Lantz, G., Mansart, B., Grieger, D., Boschetto, D., Nilforoushan, N., Papalazarou, E., Moisan, N., Perfetti, L., Jacques, V. L. R., Le Bolloc'h, D., Laulhé, C., Ravy, S., Rueff, J-P, Glover, T. E., Hertlein, M. P., Hussain, Z., Song, S., Chollet, M., Fabrizio, M., Marsi, M.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group 2017
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5228036/
https://www.ncbi.nlm.nih.gov/pubmed/28067228
http://dx.doi.org/10.1038/ncomms13917
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author Lantz, G.
Mansart, B.
Grieger, D.
Boschetto, D.
Nilforoushan, N.
Papalazarou, E.
Moisan, N.
Perfetti, L.
Jacques, V. L. R.
Le Bolloc'h, D.
Laulhé, C.
Ravy, S.
Rueff, J-P
Glover, T. E.
Hertlein, M. P.
Hussain, Z.
Song, S.
Chollet, M.
Fabrizio, M.
Marsi, M.
author_facet Lantz, G.
Mansart, B.
Grieger, D.
Boschetto, D.
Nilforoushan, N.
Papalazarou, E.
Moisan, N.
Perfetti, L.
Jacques, V. L. R.
Le Bolloc'h, D.
Laulhé, C.
Ravy, S.
Rueff, J-P
Glover, T. E.
Hertlein, M. P.
Hussain, Z.
Song, S.
Chollet, M.
Fabrizio, M.
Marsi, M.
author_sort Lantz, G.
collection PubMed
description The study of photoexcited strongly correlated materials is attracting growing interest since their rich phase diagram often translates into an equally rich out-of-equilibrium behaviour. With femtosecond optical pulses, electronic and lattice degrees of freedom can be transiently decoupled, giving the opportunity of stabilizing new states inaccessible by quasi-adiabatic pathways. Here we show that the prototype Mott–Hubbard material V(2)O(3) presents a transient non-thermal phase developing immediately after ultrafast photoexcitation and lasting few picoseconds. For both the insulating and the metallic phase, the formation of the transient configuration is triggered by the excitation of electrons into the bonding a(1g) orbital, and is then stabilized by a lattice distortion characterized by a hardening of the A(1g) coherent phonon, in stark contrast with the softening observed upon heating. Our results show the importance of selective electron–lattice interplay for the ultrafast control of material parameters, and are relevant for the optical manipulation of strongly correlated systems.
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spelling pubmed-52280362017-02-01 Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material Lantz, G. Mansart, B. Grieger, D. Boschetto, D. Nilforoushan, N. Papalazarou, E. Moisan, N. Perfetti, L. Jacques, V. L. R. Le Bolloc'h, D. Laulhé, C. Ravy, S. Rueff, J-P Glover, T. E. Hertlein, M. P. Hussain, Z. Song, S. Chollet, M. Fabrizio, M. Marsi, M. Nat Commun Article The study of photoexcited strongly correlated materials is attracting growing interest since their rich phase diagram often translates into an equally rich out-of-equilibrium behaviour. With femtosecond optical pulses, electronic and lattice degrees of freedom can be transiently decoupled, giving the opportunity of stabilizing new states inaccessible by quasi-adiabatic pathways. Here we show that the prototype Mott–Hubbard material V(2)O(3) presents a transient non-thermal phase developing immediately after ultrafast photoexcitation and lasting few picoseconds. For both the insulating and the metallic phase, the formation of the transient configuration is triggered by the excitation of electrons into the bonding a(1g) orbital, and is then stabilized by a lattice distortion characterized by a hardening of the A(1g) coherent phonon, in stark contrast with the softening observed upon heating. Our results show the importance of selective electron–lattice interplay for the ultrafast control of material parameters, and are relevant for the optical manipulation of strongly correlated systems. Nature Publishing Group 2017-01-09 /pmc/articles/PMC5228036/ /pubmed/28067228 http://dx.doi.org/10.1038/ncomms13917 Text en Copyright © 2017, The Author(s) http://creativecommons.org/licenses/by/4.0/ This work is licensed under a Creative Commons Attribution 4.0 International License. The images or other third party material in this article are included in the article's Creative Commons license, unless indicated otherwise in the credit line; if the material is not included under the Creative Commons license, users will need to obtain permission from the license holder to reproduce the material. To view a copy of this license, visit http://creativecommons.org/licenses/by/4.0/
spellingShingle Article
Lantz, G.
Mansart, B.
Grieger, D.
Boschetto, D.
Nilforoushan, N.
Papalazarou, E.
Moisan, N.
Perfetti, L.
Jacques, V. L. R.
Le Bolloc'h, D.
Laulhé, C.
Ravy, S.
Rueff, J-P
Glover, T. E.
Hertlein, M. P.
Hussain, Z.
Song, S.
Chollet, M.
Fabrizio, M.
Marsi, M.
Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
title Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
title_full Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
title_fullStr Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
title_full_unstemmed Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
title_short Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott–Hubbard material
title_sort ultrafast evolution and transient phases of a prototype out-of-equilibrium mott–hubbard material
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC5228036/
https://www.ncbi.nlm.nih.gov/pubmed/28067228
http://dx.doi.org/10.1038/ncomms13917
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