caa a22 4500 528786377 20190713030956.0 cr unu---uuuuu 180924s2017 xx s 000 0 eng 10.3929/ethz-b-000127721 doi 10.1038/ncomms13917 doi (ETHRESEARCH)oai:www.research-collection.ethz.ch:20.500.11850/127721 Ultrafast evolution and transient phases of a prototype out-of-equilibrium Mott-Hubbard material [Elektronische Daten] [Gabriel Lantz, B. Mansart, D. Grieger, Davide Boschetto, Niloufar Nilforoushan, Evangelos Papalazarou, Nicolas Moisan, Luca Perfetti, Vincent L.R. Jacques, D. Le Bolloc'h, Claire Laulhé, Sylvain Ravy, Jean-Pascal Rueff, T.E. Glover, Marc P. Hertlein, Zahid Hussain, Sanghoon Song, Matthieu Chollet, Michele Fabrizio, Marino Marsi] Nat Commun Open access ethresearch 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 V2O3 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 a1g orbital, and is then stabilized by a lattice distortion characterized by a hardening of the A1g 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. Creative Commons Attribution 4.0 International http://creativecommons.org/licenses/by/4.0 ethresearch Lantz Gabriel joint author Mansart B. joint author Grieger D. joint author Boschetto Davide joint author Nilforoushan Niloufar joint author Papalazarou Evangelos joint author Moisan Nicolas joint author Perfetti Luca joint author Jacques Vincent L.R. joint author Le Bolloc'h D. joint author Laulhé Claire joint author Ravy Sylvain joint author Rueff Jean-Pascal joint author Glover T.E. joint author Hertlein Marc P. joint author Hussain Zahid joint author Song Sanghoon joint author Chollet Matthieu joint author Fabrizio Michele joint author Marsi Marino joint author Nature Communications London : Nature Publishing Group 8, p. 13917 2041-1723 http://hdl.handle.net/20.500.11850/127721 text/html WWW-Backlink auf das Repository (Open access) 1 Journal Article ethresearch ETHRESEARCH 856 40 http://hdl.handle.net/20.500.11850/127721 text/html WWW-Backlink auf das Repository (Open access) ETHRESEARCH 700 1- Lantz Gabriel joint author ETHRESEARCH 700 1- Mansart B. joint author ETHRESEARCH 700 1- Grieger D. joint author ETHRESEARCH 700 1- Boschetto Davide joint author ETHRESEARCH 700 1- Nilforoushan Niloufar joint author ETHRESEARCH 700 1- Papalazarou Evangelos joint author ETHRESEARCH 700 1- Moisan Nicolas joint author ETHRESEARCH 700 1- Perfetti Luca joint author ETHRESEARCH 700 1- Jacques Vincent L.R. joint author ETHRESEARCH 700 1- Le Bolloc'h D. joint author ETHRESEARCH 700 1- Laulhé Claire joint author ETHRESEARCH 700 1- Ravy Sylvain joint author ETHRESEARCH 700 1- Rueff Jean-Pascal joint author ETHRESEARCH 700 1- Glover T.E. joint author ETHRESEARCH 700 1- Hertlein Marc P. joint author ETHRESEARCH 700 1- Hussain Zahid joint author ETHRESEARCH 700 1- Song Sanghoon joint author ETHRESEARCH 700 1- Chollet Matthieu joint author ETHRESEARCH 700 1- Fabrizio Michele joint author ETHRESEARCH 700 1- Marsi Marino joint author ETHRESEARCH 773 0- Nature Communications London : Nature Publishing Group 8, p. 13917 2041-1723 BK010053 XK010053 XK010000 ETHRESEARCH ETHRESEARCH ETHRESEARCH Journal Article Open access