Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 43: Spin-Dependent Phenomena in 2D
MA 43.3: Vortrag
Donnerstag, 12. März 2026, 10:15–10:30, POT/0112
Atomic-scale visualization of quasi-one-dimensional structure and magnetic-field-tunable electronic statesin CrSBr — •Keda Jin1,2, Tobias Wichmann1,3, F. Stefan Tautz1,3, Felix Lüpke1,4, Jose Martinez-Castro1,2, and Markus Ternes1,2 — 1Peter Grünberg Institut (PGI-3), Forschungszentrum Jülich, 52425 Jülich — 2Institut für Experimentalphysik II B, RWTH Aachen, 52074 Aachen — 3Institut für Experimentalphysik IV A, RWTH Aachen, 52074 Aachen — 4Institute of Physics II, Universität zu Köln, 50937 Köln
The anisotropic two-dimensional (2D) van der Waals magnet CrSBr is famous for hosting a quasi-one-dimensional (1D) electronic structure, but its direct visualisation has remained elusive.
Using low-temperature scanning tunnelling microscopy and spectroscopy, we present the atomic-scale characterisation of this quasi- 1D conduction bands in monolayer CrSBr on NbSe2. Our measurements reveal a spatial anisotropy in the local density of states, confirming the existence of conduction bands that are flat along one crystallographic direction but dispersive along the perpendicular direction. Moreover, we demonstrate that an applied magnetic field reconstructs its electronic structure, showcasing strong magneto-electronic coupling. Our work provides the real-space visualisation of the long-predicted electronic anisotropy and establishes its potential for developing magnetically-tunable low-dimensional electronic devices.
Keywords: STM, CrSBr, van der magnetic