Communications Physics (Oct 2022)
Fractional correlated insulating states at one-third filled magic angle twisted bilayer graphene
Abstract
Twisted bilayer systems can be used as a platform to engineer new correlated states, with most focus being placed on integer fillings. Here the authors consider fractional filling and the influence this has on the configuration of Wannier orbitals in the strong coupling limit, realising a state they term a fractional correlated insulator.