Advanced Electronic Materials (Feb 2023)

Giant Magnetic Anisotropy in the Atomically Thin van der Waals Antiferromagnet FePS3

  • Youjin Lee,
  • Suhan Son,
  • Chaebin Kim,
  • Soonmin Kang,
  • Junying Shen,
  • Michel Kenzelmann,
  • Bernard Delley,
  • Tatiana Savchenko,
  • Sergii Parchenko,
  • Woongki Na,
  • Ki‐Young Choi,
  • Wondong Kim,
  • Hyeonsik Cheong,
  • Peter M. Derlet,
  • Armin Kleibert,
  • Je‐Geun Park

DOI
https://doi.org/10.1002/aelm.202200650
Journal volume & issue
Vol. 9, no. 2
pp. n/a – n/a

Abstract

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Abstract Van der Waals (vdW) magnets are an ideal platform for tailoring 2D magnetism with immense potential for spintronics applications and are intensively investigated. However, little is known about the microscopic origin of magnetic order in these antiferromagnetic systems. X‐ray photoemission electron microscopy is used to address the electronic and magnetic properties of the vdW antiferromagnet FePS3 down to the monolayer. The experiments reveal a giant out‐of‐plane magnetic anisotropy of 22 meV per Fe ion, accompanied by unquenched magnetic orbital moments. Moreover, the calculations suggest that the Ising magnetism in FePS3 is a visible manifestation of spin–orbit entanglement of the Fe 3d electron system.

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