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Synopsis

The physics-archive of unconventional superconductors has long been a topic of research,yet its behaviour is not understood well enough. A Twisted Bilayer Graphene (TBG) heterostructure at a particular angle shows correlated insulating states at half-filling; upon electrostatic doping away from these correlated insulating states, the material exhibits superconducting behaviour similar to cuprates. Graphene is a carbon-based, precisely tunable 2D material and hence provides an ideal platform for future investigations of Strongly Correlated Physics, in particular, high-critical-temperature superconductors.

Reference: Cao, Y. Unconventional superconductivity in magic-angle graphene superlattices. Nature 556, 43–50 (2018).