Emergent topological semimetal from quantum criticality.

ABSTRACT: The electronic topology of a material is generally described by its Bloch states and the associated band structure, and can be altered by electron-electron interactions. In metallic systems, the interactions are usually treated through the concept of quasiparticles. Here we investigate what happens if no well-defined quasiparticles are present and show that a topological semimetal phase can emerge from the material's quantum critical state. Using the non-centrosymmetric heavy-fermion compound CeRu₄Sn₆, which is intrinsically quantum critical, we show that the topological phase exhibits a dome structure as a function of the magnetic field and pressure. To understand these results, we study a Weyl-Kondo semimetal model at a Kondo destruction quantum critical point. Inde

SUBMITTER: Kirschbaum DM 

PROVIDER: S-EPMC12904783 | biostudies-literature | 2026

REPOSITORIES: biostudies-literature