[We-P] Spintronics, spin-related phenomena, novel spintronics materials and devices

[We-P-62] Probing spin-polarized Van Hove Singularity in non-coplanar triple-Q antiferomagnetic ordered Van Der Waal magnet by using sp-STM

〇Muskan Zakirhusen Sande^1,3, Alexina Ollier^1,2, Valeria Sheina^1,2, Seik Pak⁵, Woonghee Cho⁴, Pyeongjae Park⁶, Andreas J Heinrich^1,4, Je-Geun Park⁴, MoonJib Park⁵, WonJun Jang^1,2 (1. IBS Center for Quantum Nanoscience (Korea), 2. Ewha Womans University, Seoul (Korea), 3. Department of Physics, Ewha Womans University, Seoul (Korea), 4. Department of Physics and Astronomy, Seoul National University, Seoul (Korea), 5. Department of Physics, Hanyang University, Seoul (Korea), 6. Materials Science and Technology Division, Oak Ridge National Laboratory, Tennessee (USA))

We use spin-polarized STM at 6 K to probe noncoplanar 3Q spin order in Co_1/3TaS₂. Spin-resolved imaging reveals symmetry-breaking textures, while spectroscopy shows a spin-split van Hove singularity near EF, linking atomic-scale magnetism to Berry-curvature-driven electronic behavior.