Pablo Jarillo-Herrero (MIT) presents his surprising discovery of an ultrathin material consisting of two misaligned sheets of graphene that can be easily converted from being a Mott insulator to a superconductor at the APS March Meeting 2018 in Los Angeles, CA.

Novel electronic states seen in graphene

A simple system made from two sheets of graphene has been converted from an insulator to a superconductor. The finding holds promise for opening up studies of an unconventional form of superconductivity.

Surprise graphene discovery could unlock secrets of superconductivity

Physicists make misaligned sheets of the carbon material conduct electricity without resistance.

Unconventional superconductivity in magic-angle graphene superlattices

The realization of intrinsic unconventional superconductivity—which cannot be explained by weak electron–phonon interactions—in a two-dimensional superlattice created by stacking two sheets of graphene that are twisted relative to each other by a small angle has been shown.

Nature 556, pages 43–50 (2018); doi:10.1038/nature26160