Quantum critical points of j=3/2 Dirac electrons in antiperovskite topological crystalline insulators
Author(s)
Isobe, Hiroki; Fu, Liang
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We study the effect of the long-range Coulomb interaction in j=3/2 Dirac electrons in cubic crystals with the O[subscript h] symmetry, which serves as an effective model for antiperovskite topological crystalline insulators. The renormalization group analysis reveals three fixed points that are Lorentz invariant, rotationally invariant, and O[subscript h] invariant. Among them, the Lorentz- and O[subscript h]-invariant fixed points are stable in the low-energy limit, while the rotationally invariant fixed point is unstable. The existence of a stable O[subscript h]-invariant fixed point of Dirac fermions with finite velocity anisotropy presents an interesting counterexample to emergent Lorentz invariance in solids.
Date issued
2016-06Department
Massachusetts Institute of Technology. Materials Processing Center; Massachusetts Institute of Technology. Department of PhysicsJournal
Physical Review B
Publisher
American Physical Society
Citation
Isobe, Hiroki, and Liang Fu. “Quantum Critical Points of J = 3/2 Dirac Electrons in Antiperovskite Topological Crystalline Insulators.” Physical Review B 93.24 (2016): n. pag. © 2016 American Physical Society
Version: Final published version
ISSN
2469-9950
2469-9969