Dresden 2026 – scientific programme
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MA: Fachverband Magnetismus
MA 58: Computational Magnetism II
MA 58.6: Talk
Friday, March 13, 2026, 10:45–11:00, POT/0151
Micro and macroscopic quantum details of complex spin-textures — •Wenhan Chen1,2, Sangeeta Sharma1,3, and John Kay Dewhurst2 — 1Max-Born-Institut (MBI) im Forschungsverbund Berlin e.V,Max-Born-Str 2A, Berlin — 2Max-Planck-Institut für Mikrostrukturphysik, Halle (saale) — 3Freie Universität Berlin, Berlin
Studying large-scale systems from first principles remains challenging because conventional DFT becomes prohibitively expensive. The recently proposed ultra-long-range DFT (ULR-DFT) aims to address this systematically while retaining full quantum-mechanical detail.
In our preliminary work, ULR-DFT successfully reproduces micrometre-scale ferromagnetic domains and domain walls, while also providing quantum-level information such as band structures and response functions. Applied to B20 chiral magnets, it captures helical states and skyrmion textures in agreement with experiments. Overall, ULR-DFT is promising for both fundamental research and device modelling, including band-structure engineering for spintronic applications.
Keywords: Spin-textures; Spinronics; Magnetic domains; Density functional theory