Data from: Engineering correlated insulators in bilayer graphene with a remote Coulomb superlattice

Electron superlattices allow the engineer of correlated and topological
quantum phenomena. The recent emergence of moiré superlattices in
two-dimensional (2D) heterostructures has led to exciting quantum
phenomena discoveries. However, the requirement of the moiré pattern poses
stringent limitations, and its potential cannot be switched on and off.
Here, we demonstrate remote engineering and on/off switching of correlated
states in bilayer graphene. Employing a remote Coulomb superlattice
realized by localized electrons in a twisted bilayer WS2, we impose a
Coulomb superlattice in the bilayer graphene with period and strength
determined by the twisted bilayer WS2. When the remote superlattice is
turned off, the two-dimensional electron gas (2DEG) in the bilayer
graphene is described by a Fermi liquid, when it is turned on, correlated
insulating states at both integer and fractional filling factors emerge.
This approach enables in-situ control of correlated quantum phenomena in
2D materials hosting a 2DEG.