2011/09/30 by Andreas Rüegg, Gregory A. Fiete · 176 citations
Physics and Astronomy · #Advanced Condensed Matter Physics #Atomic orbital #Condensed matter physics #Electron #Heterojunction #Lattice (music) #Materials science #Physics #Point reflection #Quantum many-body systems #Quantum mechanics #Topological Materials and Phenomena #Topological insulator #Topological order #Topology (electrical circuits) #cond-mat.str-el
paper · pdf · doi:10.1103/physrevb.84.201103
published in Physical Review B 84(20) (American Physical Society) · 4+6 pages, 3+1 figures, phase diagrams corrected and refined, reference list expanded
arxiv created 2011/10/15 · openalex publication_date 2011/11/14 · arxiv updated 2011/11/15 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
Topological band insulators which are dynamically generated by electron-electron interactions have been theoretically proposed in two- and three-dimensional lattice models. We present evidence that the two-dimensional version can be stabilized in digital (111) heterostructures of transition-metal oxides as a result of purely local interactions. The topological phases are accompanied by spontaneous ordering of complex orbitals and we discuss their stability with respect to the Hund's rule coupling, Jahn-Teller interaction, and inversion-symmetry breaking terms. As main competitors we identify spin-nematic and magnetic phases.