Quantum critical points of j=3/2 Dirac electrons in antiperovskite topological crystalline insulators
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PhysRevB.93.241113.pdf
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406.38 KB
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Author(s)
Isobe, Hiroki
Fu, Liang
Date Issued
June 2016
Journal
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
Abstract
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.
MIT Department
Massachusetts Institute of Technology. Materials Processing Center
Massachusetts Institute of Technology. Department of Physics
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DOI of Published Version
https://doi.org/10.1103/PhysRevB.93.241113
