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Magnetic 2D materials and heterostructures.

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Atomically thin 2D magnets have emerged, enabling new van der Waals heterostructures. This research reviews 2D magnetic materials and their unique phenomena, expanding the field of two-dimensional systems.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Nanotechnology

Background:

  • The family of two-dimensional (2D) materials has rapidly expanded, offering diverse physical properties.
  • A critical missing member in 2D materials was intrinsic magnetism, limiting the creation of certain van der Waals (vdW) heterostructures.
  • Recent advancements have introduced atomically thin magnetic crystals, filling this gap.

Purpose of the Study:

  • To discuss the distinctions between magnetic states in 2D materials versus bulk crystals.
  • To provide an overview of recently explored 2D magnets.
  • To highlight the potential of 2D magnets in creating novel vdW heterostructures.

Main Methods:

  • Review of existing literature on 2D magnetic materials.
  • Focus on the properties and phenomena of semiconducting CrI3 and metallic Fe3GeTe2.
  • Analysis of newly possible vdW heterostructures incorporating 2D magnets.

Main Results:

  • Introduction of various atomically thin magnetic crystals in the past two years.
  • Detailed examination of the physical phenomena observed in CrI3 and Fe3GeTe2.
  • Demonstration of new vdW heterostructures enabled by the advent of 2D magnets.

Conclusions:

  • The emergence of 2D magnets significantly broadens the scope of 2D material applications.
  • 2D magnets offer new avenues for exploring fundamental physics and designing advanced heterostructures.
  • This rapidly expanding field promises novel functionalities and device concepts.