Phys.org March 2, 2023
Multilayered graphene has many promising qualities ranging from widely tunable band structure and special optical properties to new forms of superconductivity. An international team of researchers (Austria, Israel) studied multilayer graphene for the possibility of creating topological superconductivity. In their theoretical model, simulated on a computer, they looked at various possible arrangements of different graphene sheets on top of each other and the behavior of electrons that move in the multiplayer graphene. Depending on how the different layers of graphene are shifted with respect to each other and on how many layers there were, the positively charged nuclear cores of the carbon atoms in the honeycomb lattice created different environments for the electrons around them. By starting with one electron interacting with the nuclei of the graphene they added the more complicated interactions between many electrons. With this approach, the researchers confirmed the occurrence of the exotic form of topological superconductivity. According to the researchers their work helps the experimentalists to design new setups without having to try out every configuration of graphene layers…read more. TECHNICAL ARTICLEÂ
Schematic representation of hopping and on-site parameters… Credit: Phys. Rev. B 107, 104502 , 2 March 2023Â