Microscopic mechanism of unconventional superconductivity in twisted 2D materials

Determine the microscopic mechanism and superconducting phase characteristics (including pairing symmetry and ground state) of unconventional superconductivity in twisted two-dimensional materials such as twisted bilayer graphene and twisted transition‑metal dichalcogenides, in order to resolve the outstanding open questions surrounding their superconducting state.

Background

Twisting stacked two-dimensional materials creates moiré superlattices that profoundly modify their electronic structure and can drive correlated phases such as superconductivity. Despite extensive theoretical activity, the precise nature of superconductivity in twisted 2D materials—its origin, symmetry, and microscopic pairing mechanism—remains unsettled.

Clarifying the microscopic mechanism and the superconducting phase properties is central to interpreting existing experiments and to guiding future materials design and device applications, including quantum technologies and plasmonic manipulation of collective modes in correlated states.