Discovery: A class of 2D covalent organic framework made of triphenyl- metal compounds are found to be topological insulators exhibiting robust nontrivial topological edge states.
Approach: Predictive First-principles band structure and band topology calculations.
Results and Significance: The first demonstration of the existence of ‘organic’ topological insulators, which not only advances the fundamental science of topological materials but also greatly broadens the scope and impact of these materials in various applications from spintronics to quantum computing.
Atomic lattice made of triphenyl‐Bi based organometallic framework with organometallic framework with conducting edge spin current indicated.
