Symmetries and correlations in solids probed by ultrafast high-harmonic spectroscopy

Abstract

v an optical phonon mode and linked to electronic screening.In their entirety, these results pave the way for future time-resolved studies of novel material systems. The presented circularly polarized HHG in solids holds potential applications in ultrafast magnetism or valleytronics. Moreover, the highly transferable referencing scheme enables investigations of weak absorption changes associated with correlated electronic, lattice, and spin degrees of freedom. vi Contents List of Figures xi Symbols and Abbreviations xv 1 Introduction2 High-harmonic generation in gases and solids 2.1 The three-step model of high-harmonic generation .