Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 5: Surface Magnetism and Topological Insulators (joint session MA/TT)
MA 5.8: Vortrag
Montag, 9. März 2026, 11:30–11:45, POT/0351
Single domain spectroscopic signatures of a magnetic Kagome metal — •Lukasz Plucinski1, Gustav Bihlmayer1, Yuriy Mokrousov1, Yishui Zhou2, Yixi Su2, Jonathan Denlinger3, Aaron Bostwick3, Christopher Jozwiak3, Eli Rotenberg3, Dmitriy Usachov4, and Claus M. Schneider1 — 1FZ Jülich — 2JCNS/MLZ Garching — 3ALS/LBNL Berkeley — 4DIPC San Sebastian
We investigate the magnetic Kagome metal DyMn6Sn6 using high-resolution micro-focused circular-dichroic angle-resolved photoemission (µ-CD-ARPES) to probe its magnetic and electronic properties. By tuning the kinetic energy to various features of the Dy 4f multiplet, we resolve magnetic domains in samples cryo-cooled down to 20 K. Smaller, but clear signatures are detected in the Mn 3p levels. The behavior of both Dy 4f and Mn 3p features are in remarkable agreement with our modeling based on the Hartree-Fock method, revealing ferrimagnetic alignment of Dy and Mn local moments, and further strengthening our interpretation. Adjusting the energy to the Mn 3d-dominated valence bands reveals signatures which we relate to the orbital magnetization through a comparison to ab initio electronic structure calculations. Our study establishes the spectroscopic access to a single magnetic domain in a Kagome metal, paving the way for further research into imaging magnetic phases of novel magnetic materials using µ-CD-ARPES. Preprint is available at https://arxiv.org/abs/2507.12085.
Keywords: Kagome; ARPES; circular dichroism; Daimon effect; density functional calculations