Phys.org April 4, 2024
Moiré-pattern-based potential engineering has become an important way to explore exotic physics in a variety of two-dimensional condensed matter systems. An international team of researchers (Spain, Singapore) demonstrated theoretically that a single layer of graphene, when placed between two bulk boron nitride crystal substrates with the appropriate twist angles, could support a robust topological ultra flat band emerging as the second hole band. According to the researchers this is one of the simplest platforms to design and exploit topological flat bands… read more. TECHNICAL ARTICLE
Topological flat band in monolayer graphene with a super-moiré lattice potential… Credit: Phys. Rev. Lett. 132, 126401,18 March 2024