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The discovery of two-dimensional (2D) van der Waals (vdW) materials oftenprovides interesting playgrounds to explore novel phenomena. One of the missingcomponents in 2D vdW materials is the intrinsic heavy-fermion systems, whichcan provide an additional degree of freedom to study quantum critical point(QCP), unconventional superconductivity, and emergent phenomena in vdWheterostructures. Here, we investigate 2D vdW heavy-fermion candidates throughthe database of experimentally known compounds based on dynamical mean-fieldtheory calculation combined with density functional theory (DFT+DMFT). We havefound that the Kondo resonance state of CeSiI does not change upon exfoliationand can be easily controlled by strain and surface doping. Our result indicatesthat CeSiI is an ideal 2D vdW heavy-fermion material and the quantum criticalpoint can be identified by external perturbations.

Exploring two-dimensional van der Waals heavy-fermion material: Data mining theoretical approach