Contest between superconductivity and insulating states in 'magic angle' graphene
Tuesday, July 7, 2020 - 11:10
in Physics & Chemistry
If you stack two layers of graphene one on top of the other, and rotate them at an angle of 1.1º (no more and no less) from each other—the so-called 'magic-angle,' experiments have proven that the material can behave like an insulator, where no electrical current can flow, and at the same can also behave like a superconductor, where electrical currents can flow without resistance.