Researchers at the Max Planck Institute for the Structure and Dynamics of Matter (MPSD), in collaboration with international partners, have developed momentum-resolved Floquet optical selection rules. They show how these symmetry-based rules determine the spectral weight distributions of photon-dressed sidebands in time- and angle-resolved photoemission spectroscopy (TrARPES) experiments across different pump-probe configurations. This fundamental work has now been published in Science Advances.



Summary

Researchers at the Max Planck Institute and international collaborators have established momentum-resolved Floquet optical selection rules. These rules, based on symmetry, govern the distribution of spectral weight in photon-dressed sidebands observed in time- and angle-resolved photoemission spectroscopy (TrARPES). The research demonstrates how these rules apply to diverse pump-probe configurations, providing a crucial framework for understanding and interpreting TrARPES data. This development offers a fundamental tool for exploring light-matter interactions and dynamics in materials, as detailed in their publication in Science Advances.

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