This article on Phys org discusses a study on the tunable quantum anomalous Hall effects (QAHE) in van der Waals heterostructures, particularly focusing on materials composed of Bi and MnBi₂Te₄ monolayers. Researchers, using first-principles calculations, have demonstrated that by manipulating the magnetization orientation through strain, magnetic fields, or twisting, the magnetic and topological properties of these materials can be significantly altered. This tunability allows for the realization of QAHE with controllable Chern numbers, offering potential advancements in topotronic devices.
For a detailed exploration, you can read the full article on Phys org: