Berlin 2024 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 29: Spin-Dependent Phenomena in 2 D
MA 29.7: Vortrag
Mittwoch, 20. März 2024, 16:30–16:45, EB 202
Emergence of the Unconventional Magnetic Order in Twisted Double Bilayer CrI3 (Part 1) — •King Cho Wong1, Ruoming Peng1, Joerg Wrachtrup1, Eric Anderson2, Xiaodong Xu2, Elton Santo3, and Sarah Jenkins3 — 1University of Stuttgart, Stuttgart, Germany — 2University of Washington, USA — 3University of Edinburgh, The United Kingdom
The twisted engineering of magnetic two-dimensional (2D) materials provides a controlled and versatile platform for exploring exotic correlated and topological states. Here, we employ the scanning NV probe technique to investigate the magnetic properties of twisted double bilayer CrI3. Our study has unveiled an unconventional ferromagnetic and antiferromagnetic behavior within the realm of twisted antiferromagnets. The manifestation of this magnetic order is underpinned by moiré-induced magnetic competition. Notably, our observations include a substantial domain wall width of approximately 100 nm and a consistent magnetization of 30 *b/nm^2 within small twisted-angle devices.
Keywords: 2D magnetism; Moire; Nitrogen vacancy centre