Ultrafast modification of the electronic structure of a correlated insulator
O. Grånäs, Igor Vaskivskyi, Xiaocui Wang, Patrik Thunström, S. Ghimire, R. Knut, Johan Söderström, L. Kjellsson, Diego Turenne, Robin Y. Engel, Martin Beye, Jian Lu, Daniel J. Higley, A. H. Reid, W. Schlotter, Giacomo Coslovich, Matthias C. Hoffmann, Grigory Kolesov, C. Schüßler-Langeheine, A. Styervoyedov, Nicolas Tancogne-Dejean, Michael A. Sentef, David A. Reis, Ángel Rubio, S. Parkin, Olof Karis, Jan‐Erik Rubensson, Olle Eriksson, H. A. Dürr
Abstract
A strong nonresonant pumping may modify the microscopic interaction parameters in a prototypical correlated insulator NiO. Findings show that the effective hopping parameter $t$ is malleable, whereas the effective local Coulomb repulsion $U$ is inert.
Topics & Concepts
Ultrashort pulseElectronic structurePhysicsUltrafast laser spectroscopyAtomic orbitalCoulombElectronHigh harmonic generationSpectroscopyAtomic physicsChemistryEngineering physicsQuantum mechanicsLaserElectronic and Structural Properties of OxidesSemiconductor materials and devicesQuantum and electron transport phenomena