Presentation Information
[2H05]Kondo lattice with tailored dimensionality in monolayer van der Waals crystals
*Yingshuang Fu1 (1. School of Physics, Huazhong University of Science and Technology)
Spin lattices in monolayer van der Waals (vdW) crystals provide a paradigm for exploring fundamental spin excitations at the 2D limit. This calls for the delicate design and characterizing the spin states of monolayer vdW crystals with atomic scale procession. In this talk, I will present our recent research in the construction of spin lattices with molecular beam epitaxy and addressing their spin states with spectroscopic imaging scanning tunneling microscopy. We firstly explored artificial Kondo lattices in monolayer vdW crystals aiming to emulate protocol heavy fermion systems. The artificial Kondo lattice systems are not only simple in structure, but also may add desired functionalities. We realized quasi-1D Kondo lattice in monolayer stripe-phase 1T-NbSe2, nano-sized Kondo insulators in a heterostructure composed of NbSe/1H-NbSe2, and superconducting 2D Kondo lattice in monolayer VSe2 grown on NbSe2. Our study realizes artificial Kondo lattices with tailored dimensionality, establishing connection between the heavy fermion physics and 2D materials with desired functionalities.