Dresden 2026 – wissenschaftliches Programm

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O: Fachverband Oberflächenphysik

O 71: 2D Materials: Electronic structure, excitations, etc. – Poster (joint session O/TT)

O 71.3: Poster

Mittwoch, 11. März 2026, 18:00–20:00, P2

trARPES investigation electron-phonon coupling in CrSBr — •Maurits Houmes, Karl Schiller, Lasse Sternemann, Jonah Nitschke, and Mirko Cinchetti — Departement of Physics, TU Dortmund University, 44227 Dortmund, Germany

CrSBr is a magnetic, semiconducting van der Waals material that has recently attracted significant interest. It hosts both localized Frenkel excitons and delocalized Wannier-Mott-like excitons, and its excitonic properties are strongly influenced by magnetic ordering and lattice distortions. [1,2,3] These features make CrSBr a compelling platform for exploring correlated phenomena in condensed matter systems.

To advance our understanding of the interplay between excitons, magnetism, and lattice dynamics in this material, a more complete characterization is essential. In this work, we present time- and angle-resolved photoemission spectroscopy (trARPES) measurements performed on CrSBr, with particular emphasis on quantifying the electron-phonon coupling. Aiming to provide a previously missing component needed to build a comprehensive picture of the interactions in CrSBr, offering a foundation for future studies and potential technological applications of this promising material.

1. Smiertka, M. et al. Preprint at ArXiv:2506.16426 (2025). 2. Lin, K. et al. ACS Nano 18, 2898-2905 (2024). 3. Bork, S. et al. Preprint at ArXiv:2511.20268v1 (2025).

Keywords: CrSBr; 2D material; ARPES; electron-phonon coupling; magnetic semiconductor