Exclusive interplay between topological quasiparticles and strongly correlated fermions

The low-energy excitations of topological quantum matter have been increasingly comprehended. However, the impact of these excitations on strongly correlated fermions remains rarely explored. Here, we report the discovery of an incompatible dynamic of 4f quasiparticle and topological quasiparticle. The former forms through screening processes, while the latter suppresses the screening channel. By employing ab initio many-body perturbation theory combined with dynamical mean field theory, we show that this effect prompts two types of topological semimetals. The type-I semimetal PrPtBi exhibits a topological quasiparticle away from the Fermi level due to the formation of a 4f quasiparticle. The type-II semimetals HoPtBi and PrAlGe feature a robust topological quasiparticle at the Fermi level, which pushes the 4f quasiparticle away. Our work provides an avenue to harness semimetals' anomalous quantum effects from topological quasiparticle to heavy-fermion behavior by the incorporation of 4f quasiparticles.