Impact of correlations on topology in Kane-Mele model decorated with impurities
arXiv:2311.07379 · doi:10.1103/PhysRevB.109.075147
Abstract
We propose an effective model for the study of the interplay between correlation and topology by decorating the Kane-Mele model with a set of localized interacting orbitals hybridized to just one sublattice, breaking the inversion symmetry. We show that in the time-reversal symmetric case, the interplay between interactions and hybridization extends the stability of the topological phase and depending on the driving mechanism very different behaviors are observed after the topological phase transition (TPT). We discuss the fate of the TPT in presence of weak ferromagnetic order, by introducing a weak local magnetic field at the localized orbitals, which splits the two band inversion points. One of the platforms to apply this model to are ferrovalley compounds, which are characterized by two independent band inversion points. Understanding this family of materials is crucial for the development of the valleytronics. An alternative to spintronics, which uses valley polarization as opposed to spin degrees of freedom as the building block, promises great opportunities for the development of information storage.
11 pages, 6 figures
References in corpus (24)
- Topological Insulators with Inversion Symmetry
- Quantum Spin Hall Effect and Topologically Invariant Chern Numbers
- Robustness of the Spin-Chern number
- Variational cluster approach to correlated electron systems in low dimensions
- Cluster Dynamical Mean Field Theory of the Mott Transition
- MATBG as Topological Heavy Fermion: I. Exact Mapping and Correlated Insulators
- Simplified topological invariants for interacting insulators
- Mott insulators with boundary zeros
- Floquet Engineering of Nonequilibrium Valley-Polarized Quantum Anomalous Hall Effect with Tunable Chern Number
- Failure of Topological Invariants in Strongly Correlated Matter
- Ab-initio overestimation of the topological region in Eu-based compounds
- Unified role of Green's function poles and zeros in topological insulators
- Designing three-dimensional flat bands in nodal-line semimetals
- Interplay of local order and topology in the extended Haldane-Hubbard model
- Electronic and optical properties of InAs/InAsSb superlattices and their application to far-infrared detectors
- Doping phase diagram of a Hubbard model for twisted bilayer cuprates
- Correlation-corrected band topology and topological surface states in iron-based superconductors
- Quantum anomalous Hall insulator in ionic Rashba lattice of correlated electrons
- Efficient computational screening of strongly correlated materials -- Multi-orbital phenomenology within the ghost Gutzwiller approximation
- Correlation-driven topological transition in Janus VSiGeP2As2
- Fast electrically switchable large gap quantum spin Hall states in MGeZ
- Thermal topological phase transition in SnTe from \emph{ab-initio} calculations
- Large-gap quantum anomalous Hall states induced by functionalizing buckled Bi-III monolayer/AlO
- Interplay between edge states and charge density wave order in the Falicov-Kimball model on a Haldane ribbon