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MPI for the Structure and Dynamics of Matter
@mpsdhamburg.bsky.social
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We explore the fundamental make-up of matter with ultrafast light sources and groundbreaking theory. We post in DE & EN

Imprint / Impressum: http://mpsd.mpg.de/imprint
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📢 Publication Alert 📢
Scientists from our theory group have published a new Study in #scienceadvances that shows that you can predict photon-sideband distributions in certain materials using Symmetry-based Floquet Optical Selection.

www.mpsd.mpg.de/1079352/2025...
@science.org
#physics #maxplanck
Scientific Graphic from the Paper. It shows Disentangling spectral weight distributions in TrARPES via Floquet optical selection rules. The left panel shows a pump-probe setup in a TrARPES experiment on monolayer black phosphorus (BP), where the AC-polarized (s-pol.) pumping laser (blue) is incident perpendicular to the glide-mirror plane and the ZZ-polarized (p-pol.) probe laser (red) lies within this plane. Group-theoretical analysis of the system’s symmetry yields Floquet optical selection rules that govern the visibility of photon-dressed sidebands. The right panel presents a TDDFT-simulated TrARPES intensity plot along the AC direction of BP, obtained from ejected-electron data, with spectral weight distributions across sidebands of different Floquet indices n reflecting the symmetry constraints.
August 21, 2025 at 12:54 PM
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We are the MPSD, our Research focusses on the structure and properties of matter down to its atomic and electronic motions on the shortest timescales. ⏳
August 15, 2025 at 1:33 PM