Fauseweh, BenediktZhu, Jian-Xin2025-09-252025-09-252024-12-06http://hdl.handle.net/2003/43989Time-resolved ultrafast spectroscopy has emerged as a promising tool to dynamically induce and manipulate non-trivial electronic states of matter out-of-equilibrium. Here we theoretically investigate light pulse driven dynamics in a Kondo lattice system close to quantum criticality. Based on a time-dependent auxiliary fermion mean-field calculation we show that light can dehybridize the local Kondo screening and induce oscillating magnetic order out of a previously paramagnetic state. Depending on the laser pulse field amplitude and frequency the Kondo singlet can be completely deconfined, inducing a dynamic Lifshitz transition that changes the Fermi surface topology. These phenomena can be identified in harmonic generation and time-resolved angle-resolved photoemission spectroscopy spectra. Our results shed new light on non-equilibrium states in heavy fermion systems.enJournal of physics; 37(7)https://creativecommons.org/licenses/by/4.0/Non-equilibrium phase transitionLifshitz transitionHigh harmonic generationHeavy fermion systems530Article