Pressure-controlled interlayer magnetism in atomically thin CrI3

DOI DOI PDF Web Site 研究データあり 被引用文献7件 参考文献1件 オープンアクセス

書誌事項

公開日
2019-10-28
権利情報
  • https://www.springer.com/tdm
  • https://www.springer.com/tdm
DOI
  • 10.1038/s41563-019-0506-1
  • 10.48550/arxiv.1905.10905
公開者
Springer Science and Business Media LLC

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説明

Stacking order can significantly influence the physical properties of two-dimensional (2D) van der Waals materials. The recent isolation of atomically thin magnetic materials opens the door for control and design of magnetism via stacking order. Here we apply hydrostatic pressure up to 2 GPa to modify the stacking order in a prototype van der Waals magnetic insulator CrI3. We observe an irreversible interlayer antiferromagnetic (AF) to ferromagnetic (FM) transition in atomically thin CrI3 by magnetic circular dichroism and electron tunneling measurements. The effect is accompanied by a monoclinic to a rhombohedral stacking order change characterized by polarized Raman spectroscopy. Before the structural change, the interlayer AF coupling energy can be tuned up by nearly 100% by pressure. Our experiment reveals interlayer FM coupling, which is the established ground state in bulk CrI3, but never observed in native exfoliated thin films. The observed correlation between the magnetic ground state and the stacking order is in good agreement with first principles calculations and suggests a route towards nanoscale magnetic textures by moir�� engineering.

収録刊行物

  • Nature Materials

    Nature Materials 18 (12), 1303-1308, 2019-10-28

    Springer Science and Business Media LLC

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