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Direct visualization of magnetic domains and moiré magnetism in twisted 2D magnets.
Song, Tiancheng; Sun, Qi-Chao; Anderson, Eric; Wang, Chong; Qian, Jimin; Taniguchi, Takashi; Watanabe, Kenji; McGuire, Michael A; Stöhr, Rainer; Xiao, Di; Cao, Ting; Wrachtrup, Jörg; Xu, Xiaodong.
Affiliation
  • Song T; Department of Physics, University of Washington, Seattle, WA 98195, USA.
  • Sun QC; 3. Physikalisches Institut, University of Stuttgart, 70569 Stuttgart, Germany.
  • Anderson E; Department of Physics, University of Washington, Seattle, WA 98195, USA.
  • Wang C; Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
  • Qian J; Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA.
  • Taniguchi T; International Center for Materials Nanoarchitectonics, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
  • Watanabe K; Research Center for Functional Materials, National Institute for Materials Science, 1-1 Namiki, Tsukuba 305-0044, Japan.
  • McGuire MA; Materials Science and Technology Division, Oak Ridge National Laboratory, Oak Ridge, TN 37831, USA.
  • Stöhr R; 3. Physikalisches Institut, University of Stuttgart, 70569 Stuttgart, Germany.
  • Xiao D; Center for Applied Quantum Technology, University of Stuttgart, 70569 Stuttgart, Germany.
  • Cao T; Department of Physics, Carnegie Mellon University, Pittsburgh, PA 15213, USA.
  • Wrachtrup J; Department of Materials Science and Engineering, University of Washington, Seattle, WA 98195, USA.
  • Xu X; 3. Physikalisches Institut, University of Stuttgart, 70569 Stuttgart, Germany.
Science ; 374(6571): 1140-1144, 2021 Nov 26.
Article in En | MEDLINE | ID: mdl-34822270
Moiré superlattices of twisted nonmagnetic two-dimensional (2D) materials are highly controllable platforms for the engineering of exotic correlated and topological states. Here, we report emerging magnetic textures in small-angle twisted 2D magnet chromium triiodide (CrI3). Using single-spin quantum magnetometry, we directly visualized nanoscale magnetic domains and periodic patterns, a signature of moiré magnetism, and measured domain size and magnetization. In twisted bilayer CrI3, we observed the coexistence of antiferromagnetic (AFM) and ferromagnetic (FM) domains with disorder-like spatial patterns. In twisted double-trilayer CrI3, AFM and FM domains with periodic patterns appear, which is in good agreement with the calculated spatial magnetic structures that arise from the local stacking-dependent interlayer exchange interactions in CrI3 moiré superlattices. Our results highlight magnetic moiré superlattices as a platform for exploring nanomagnetism.

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2021 Document type: Article Affiliation country: United States Country of publication: United States

Full text: 1 Collection: 01-internacional Database: MEDLINE Language: En Journal: Science Year: 2021 Document type: Article Affiliation country: United States Country of publication: United States