SKM 2023 – scientific programme

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TT: Fachverband Tiefe Temperaturen

TT 47: Quantum-Critical Phenomena

TT 47.11: Talk

Thursday, March 30, 2023, 12:15–12:30, HSZ 204

Antiferromagnetic Weyl quantum criticality in three-dimensional Luttinger semimetals — •David Jonas Moser and Lukas Janssen — Technische Universität Dresden, Dresden, Deutschland

Luttinger semimetals are three-dimensional strongly-spin-orbit-coupled systems, in which valence and conduction bands touch quadratically at the Fermi level. They provide a rich playground for highly unconventional physics and serve as a parent state to a number of exotic states of matter, such as Weyl semimetals, topological insulators, or spin ice. Here, we discuss a quantum critical point between Luttinger and antiferromagnetic Weyl semimetals using a renormalization group approach. Our results are relevant for the low-temperature behavior of rare-earth pyrochlore iridates, such as Pr₂Ir₂O₇ or Nd₂Ir₂O₇.