Dresden 2026 – scientific programme
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HL: Fachverband Halbleiterphysik
HL 30: 2D Materials V – Magnetic, spintronic, and topological properties (joint session HL/TT)
HL 30.4: Talk
Wednesday, March 11, 2026, 16:15–16:30, POT/0081
Proposal for Resolving Quantized Landau Orbits via Elastic XUV Scattering — •Sabrina Meyer1, Andreas Knorr1, Stephen Hughes2, and Lara Greten1,2 — 1Institut für Physik und Astronomie, Technische Universität Berlin, Germany — 2Department of Physics, Queen's University, Kingston, Canada
In a strong perpendicular magnetic field, a two-dimensional electron gas is quantized into discrete Landau levels. We propose a method to extract the spatial structure of Landau orbits via scattering with extreme ultraviolet radiation, whose wavelength naturally matches the Larmor radius. In a microscopic theory, we derive the far-field spectrum emitted by the optically induced current density. Contributions from Landau orbits within this spectrum are suppressed due to scattering effects imposed by the sample geometry. By normalizing against the zero-magnetic-field reference, however, we define a Landau level scattering spectrum that isolates Landau orbit information. This gives access to the probability density distributions of individual Landau level wave functions featuring radial maxima at the quantized Larmor radii.
Keywords: Theory; Landau level; Extreme Ultraviolet Radiation (XUV); Scattering