Transport properties of van der Waals heterostructures based on two-dimensional magnet

Emerging properties of van der Waals (vdW) materials at two-dimensional (2D) limit have been broadening their varieties, ranging from spin-orbit coupled transport properties, valley-polarized luminescence, spin-valley-locked superconductivities, to topological quantum transport. As one of big advantages of 2D materials, 2D physical phenomena could be more and more enriched by integrating different 2D materials into a heterostructure, so-called vdW heterostructures, providing a new high-quality platform for 2D physics. One recent breakthrough in 2D physics is observation of magnetism in vdW materials, which turned out to survive down to 2D limit. This type of magnet, so-called 2D magnet, has been integrated into various types of vdW heterostructures, while tuning magnetism itself at vdW heterostructures has been less investigated so far. Here we created magnetic vdW heterostructures by molecular-beam epitaxy, where a new type of 2D magnet, vanadium selenide epitaxial thin film, was incorporated. In the presentation, we will show transport properties of those heterostructures, and discuss the interface effect on 2D magnetism.