2013/02/28 by Zhengfei Wang, Z. F. Wang, Zheng Liu +1 · 2 citations
Materials Science · Physics and Astronomy · #Condensed matter physics #Electron #Graphene research and applications #Physics #Quantum #Quantum Hall effect #Quantum anomalous Hall effect #Quantum many-body systems #Quantum mechanics #Quantum spin Hall effect #Topological Materials and Phenomena #Topological insulator #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevlett.110.196801
published as Phys. Rev. Lett. 110, 196801 (2013) · 5 pages, 4 figures
arxiv created 2013/03/27 · openalex publication_date 2013/05/06 · arxiv updated 2013/05/08 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
The quantum anomalous Hall effect (QAHE) is a fundamental transport phenomenon in the field of condensed-matter physics. Without an external magnetic field, spontaneous magnetization combined with spin-orbit coupling gives rise to a quantized Hall conductivity. So far, a number of theoretical proposals have been made to realize the QAHE, but all based on inorganic materials. Here, using first-principles calculations, we predict a family of 2D organic topological insulators for realizing the QAHE. Designed by assembling molecular building blocks of triphenyl-transition-metal compounds into a hexagonal lattice, this new class of organic materials is shown to have a nonzero Chern number and exhibits a gapless chiral edge state within the Dirac gap.