Dresden 2026 – scientific programme
Parts | Days | Selection | Search | Updates | Downloads | Help
TT: Fachverband Tiefe Temperaturen
TT 37: Ultrafast electron dynamics at surface and interfaces – Poster (joint session O/TT)
TT 37.21: Poster
Tuesday, March 10, 2026, 14:00–16:00, P2
Towards time-resolved momentum microscopy of plasmon excited quantum materials — •Mattis Langendorf1, Lina Segerer1, Paul Werner1, Marco Merboldt1, Jonas Pöhls1, Tobias Meyer1, Daniel Steil1, Junde Liu1, Jan Philipp Bange1, Wiebke Bennecke1, G. S. Matthijs Jansen1, R. Thomas Weitz1, Marcel Reutzel2, and Stefan Mathias1 — 1Georg-August-Universität Göttingen, Germany — 2Philipps-Universität Marburg, Germany
For the realization of Floquet*Bloch engineering as well as for the study of formation and propagation of excitons in two-dimensional quantum materials using time- and angle-resolved photoemission spectroscopy (ARPES), a highly localized excitation on a micron scale seems ideal [1]. However, achieving such spatial confinement poses a significant experimental challenge. Surface plasmon polaritons (SPPs) offer a promising solution, as these collective charge-carrier oscillations enable strong electromagnetic field localization and can therefore provide the required tightly focused excitation conditions [2]. In combination with femtosecond momentum microscopy that enables spatiotemporal access to electron and exciton dynamics [3], we investigate the concept of exploiting SPPs as a driving field to excite quantum materials.
[1] Merboldt et al., Nat. Phys. 21, 1093*1099 (2025).
[2] Dreher et al., Nanophotonics 11, 3687-3694 (2022).
[3] Reutzel, Jansen, Mathias, Adv. in Phys. X 9, 2378722 (2024).
Keywords: Ultrafast momentum microscopy; trARPES; SPP; light-matter interaction; TMD