4.8 Article

Hole-doping induced ferromagnetism in 2D materials

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NPJ COMPUTATIONAL MATERIALS
卷 8, 期 1, 页码 -

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NATURE PORTFOLIO
DOI: 10.1038/s41524-022-00916-2

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资金

  1. FLAG-ERA grant DIMAG
  2. search Foundation-Flanders (FWO)
  3. KU Leuven Research Fund [C14/17/080, C14/21/083]
  4. FWO
  5. Flemish Government-department EWI

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Through high-throughput calculations and evolutionary search method, 122 2D materials with potential ferromagnetism upon hole doping are identified, with some materials predicted to have Curie temperatures above 300K. These findings are important for understanding the properties of doped 2D ferromagnetic materials and enriching the family of 2D magnetic materials.
Two-dimensional (2D) ferromagnetic materials are considered as promising candidates for the future generations of spintronic devices. Yet, 2D materials with intrinsic ferromagnetism are scarce. Hereby, high-throughput first-principles simulations are performed to screen 2D materials that present a non-magnetic to a ferromagnetic transition upon hole doping. A global evolutionary search is subsequently performed to identify alternative possible atomic structures of the eligible candidates, and 122 materials exhibiting a hole-doping induced ferromagnetism are identified. Their energetic and dynamic stability, as well as magnetic properties under hole doping are investigated systematically. Half of these 2D materials are metal halides, followed by chalcogenides, oxides, and nitrides, some of them having predicted Curie temperatures above 300 K. The exchange interactions responsible for the ferromagnetic order are also discussed. This work not only provides theoretical insights into hole-doped 2D ferromagnetic materials, but also enriches the family of 2D magnetic materials for possible spintronic applications.

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