Title: Millimeter-scale Magic-angle Twisted Bilayer Graphene and Its Electronic Structure
Abstract: Twisted bilayer graphene with the magic-angle 1.1° exhibited superconductivity due to the large density of states at the energy of the flat band. Generally, experiments on twisted bilayer graphene have been performed using micrometer-scale samples. For device applications, fabrication of large-scale twisted bilayer graphene is required. In this paper, I report on the fabrication of the millimeter-scale magic-angle twisted bilayer graphene sample and the observation of its flat band using angle-resolved photoemission spectroscopy measurements.