Probing magnetism in atomically thin semiconducting PtSe₂.

ABSTRACT: Atomic-scale disorder in two-dimensional transition metal dichalcogenides is often accompanied by local magnetic moments, which can conceivably induce long-range magnetic ordering into intrinsically non-magnetic materials. Here, we demonstrate the signature of long-range magnetic orderings in defective mono- and bi-layer semiconducting PtSe₂ by performing magnetoresistance measurements under both lateral and vertical measurement configurations. As the material is thinned down from bi- to mono-layer thickness, we observe a ferromagnetic-to-antiferromagnetic crossover, a behavior which is opposite to the one observed in the prototypical 2D magnet CrI₃. Our first-principles calculations, supported by aberration-corrected transmission electron microscopy imaging of point

SUBMITTER: Avsar A 

PROVIDER: S-EPMC7511911 | biostudies-literature | 2020 Sep

REPOSITORIES: biostudies-literature