Kondo Holes in the Two-Dimensional Itinerant Ising Ferromagnet Fe3GeTe2

Abstract

Heavy Fermion (HF) states emerge in correlated quantum materials due to the intriguing interplay between localized magnetic moments and itinerant electrons but rarely appear in 3d-electron systems due to high itinerancy of d-electrons. An itinerant Kondo–Ising model is established to reproduce the experimental results, explains the microscopic origin of the d-electron HF states in Fe3GeTe2, and inspires future studies of the enriched quantum many-body effects with Kondo holes.