Ferromagnetism emerged from non-ferromagnetic atomic crystals. Academic Article uri icon

abstract

  • The recently emerged ferromagnetic two-dimensional (2D) materials provide uniqueplatforms for compact spintronicdevices down to theatomic-thin regime; however, the prospect is hindered by the limited number of ferromagnetic 2D materials discovered with limited choices of magnetic properties. If 2D antiferromagnetism could be converted to 2D ferromagnetism, the range of 2D magnets and their potential applications would be significantly broadened. Here, we discovered emergent ferromagnetism by interfacing non-magnetic WS2 layers with the antiferromagnetic FePS3. The WS2 exhibits an order of magnitude enhanced Zeeman effect with a saturated interfacial exchange field ~38 Tesla. Given the pristine FePS3 is an intralayer antiferromagnet, the prominent interfacial exchange field suggests the formation of ferromagnetic FePS3 at interface. Furthermore, the enhanced Zeeman effect in WS2 is found to exhibit a strong WS2-thickness dependence, highlighting the layer-tailorable interfacial exchange coupling in WS2-FePS3 heterostructures, which is potentially attributed to the thickness-dependent interfacial hybridization.

published proceedings

  • Nat Commun

altmetric score

  • 1

author list (cited authors)

  • Gong, C., Zhang, P., Norden, T., Li, Q., Guo, Z., Chaturvedi, A., ... Zhang, X.

citation count

  • 5

complete list of authors

  • Gong, Cheng||Zhang, Peiyao||Norden, Tenzin||Li, Quanwei||Guo, Zhen||Chaturvedi, Apoorva||Najafi, Arman||Lan, Shoufeng||Liu, Xiaoze||Wang, Yuan||Gong, Shi-Jing||Zeng, Hao||Zhang, Hua||Petrou, Athos||Zhang, Xiang

publication date

  • June 2023