Complete mapping of magnetic anisotropy for prototype Ising van der Waals FePS${}_3$

Abstract

Several Ising-type magnetic van der Waals (vdW) materials exhibit stable magnetic ground states. Despite these clear experimental demonstrations, a complete theoretical and microscopic understanding of their magnetic anisotropy is still lacking. In particular, the validity limit of identifying their one-dimensional (1-D) Ising nature has remained uninvestigated in a quantitative way. Here we performed the complete mapping of magnetic anisotropy for a prototypical Ising vdW magnet FePS${}_3$ for the first time. Combining torque magnetometry measurements with their magnetostatic model analysis and the relativistic density functional total energy calculations, we successfully constructed the three-dimensional (3-D) mappings of the magnetic anisotropy in terms of magnetic torque and energy. The results not only quantitatively confirm that the easy axis is perpendicular to the $ab$ plane, but also reveal the anisotropies within the $ab$, $ac$, and $bc$ planes. Our approach can be applied to the detailed quantitative study of magnetism in vdW materials.

Accepted in IOP 2D Materials

References in corpus (5)

• Magnetic 2D materials and heterostructures
• Ising-Type Magnetic Ordering in Atomically Thin FePS3
• Suppression of magnetic ordering in XXZ-type antiferromagnetic monolayer NiPS3
• Tunneling transport of mono- and few-layers magnetic van der Waals MnPS${}_3$
• Density Functional plus Dynamical Mean-Field Theory of the Spin-Crossover Molecule Fe(phen)${}_2$(NCS)${}_2$