Berlin 2024 – scientific programme

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MA: Fachverband Magnetismus

MA 20: Poster I

MA 20.28: Poster

Tuesday, March 19, 2024, 16:30–19:00, Poster A

Studying Moire magnetism with diamond scanning probe — •King Cho Wong — Physics Institute 3

Moiré superlattices of twisted magnetic two-dimensional (2D) materials are interesting platforms for creating peculiar magnetic states. Here, we report emerging novel magnetic textures in twisted double bilayer chromium triiodide (tDB-CrI3). Using single-spin quantum magnetometry, we directly visualized nanoscale magnetic domains and patterns, and measured domain and domain wall size. In twisted bilayer CrI3, we observed the coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) domains with twisted angle dependence. We also observed peculiar magnetic phase in the samples. Our results highlight magnetic moiré superlattices as a platform for exploring nanomagnetism.

Keywords: Moire; nitrogen vacancy centre; diamond; 2D materials; 2D magnet