2018/08/31 by Jin-Hong Park, J. Park, Seung Hun Lee +4
Physics and Astronomy · #Advanced Condensed Matter Physics #Condensed matter physics #Fermi surface #Instability #Physics #Physics of Superconductivity and Magnetism #Quantum mechanics #Symmetry breaking #Topological Materials and Phenomena #cond-mat.mtrl-sci #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.99.195107
published as Phys. Rev. B 99, 195107 (2019) · 26+31 pages, 6+8 figures
arxiv created 2019/02/01 · openalex publication_date 2019/05/06 · arxiv updated 2019/05/07 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Peierls instability is a ubiquitous mechanism originally suggested in one-dimensional half-filled lattices. Here, the authors show that two-dimensional Peierls instability can be realized in a class of perovskite oxides. The central role is played by the zone-boundary Dirac line node, protected by two orthogonal glide mirrors induced by the rotation of oxygen octahedra. The authors propose this two-dimensional Peierls instability driven by dispersionless Dirac line nodes as the principal mechanism for spontaneous symmetry breaking in various layered perovskite oxides, including the antiferromagnetism of Sr2IrO4.