Abstract

Lightwave-driven relativistic electron motion will be directly visualized in actual band-structure movies. By combining strong mid-infrared fields with photoemission momentum microscopy of the entire first Brillouin zone, we will merge subcycle band-structure videography with in-situ high-harmonic and high-order sideband generation. In four work packages, we will capture Dirac-fermion motion in topological insulators, Landau-Zener tunneling and Zitterbewegung in graphene, valleytronic control in TMDCs, and relativistic effects in moiré superlattices.