Anomalous Hall effect and magnetic orderings in nanothick V${}_5$S${}_8$

Abstract

The rise of graphene marks the advent of two-dimensional atomic crystals, which have exhibited a cornucopia of intriguing properties, such as the integer and fractional quantum Hall effects, valley Hall effect, charge density waves and superconductivity, to name a few. Yet, magnetism, a property of extreme importance in both science and technology, remains elusive. There is a paramount need for magnetic two-dimensional crystals. With the availability of many magnetic materials consisting of van der Waals coupled two-dimensional layers, it thus boils down to the question of how the magnetic order will evolve with reducing thickness. Here we investigate the effect of thickness on the magnetic ordering in nanothick V${}_5$S${}_8$. We uncover an anomalous Hall effect, by which the magnetic ordering in V${}_5$S${}_8$ down to 3.2 nm is probed. With decreasing thickness, a breakdown of antiferromagnetism is evident, followed by a spin-glass-like state. For thinnest samples, a weak ferromagnetic ordering emerges. The results not only show an interesting effect of reducing thickness on the magnetic ordering in a potential candidate for magnetic two-dimensional crystals, but demonstrate the anomalous Hall effect as a useful characterization tool for magnetic orderings in two-dimensional systems.

17 pages, 5 figures and supplementary material

References in corpus (9)

• Layer-dependent Ferromagnetism in a van der Waals Crystal down to the Monolayer Limit
• Discovery of intrinsic ferromagnetism in 2D van der Waals crystals
• Graphene Spintronics
• Ising-Type Magnetic Ordering in Atomically Thin FePS3
• Atomic-scale control of graphene magnetism using hydrogen atoms
• Viewpoint: Opportunities and challenges of two-dimensional magnetic van der Waals materials: magnetic graphene?
• Thickness-Dependent and Magnetic-Field-Driven Suppression of Antiferromagnetic Order in Thin V${}_5$S${}_8$ Single Crystals
• Pressure-tuned quantum criticality in the antiferromagnetic Kondo semi-metal CeNi${}_{2-\delta }$As${}_2$
• Successive spin-flop transitions of Neel-type antiferromagnet Li${}_2$MnO${}_3$ single crystal with honeycomb-lattice

Cited by in corpus (5)

• Metallic vanadium disulfide nanosheets as a platform material for multifunctional electrode applications
• Two dimensional magnets: Forgotten history and recent progress towards spintronic applications
• Intrinsic 2D Ferromagnetism in V5Se8 Epitaxial Thin Films
• Novel 2D vanadium sulphides: synthesis, atomic structure engineering and charge density waves
• Observation of Weak Kondo Effect and Angle Dependent Magnetoresistance in Layered Antiferromagnetic V${}_5$S${}_8$ Single Crystal