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    Physicists create Tunable Superconductivity in Twisted Graphene ‘Nanosandwich’

    February 3, 2021, Categories  Physics, Chemistry/Nanotechnology

    Illustration of electrons against hexagonal pattern
    This artist’s rendition shows magic-angle twisted trilayer graphene, composed of three honeycomb lattices. The tightly bound electrons (yellow spheres connected by blue halos) indicate the new structure’s strongly coupled superconducting state.
    Credits:Image: Ella Maru Studio

    When two sheets of graphene are stacked atop each other at just the right angle, the layered structure morphs into an unconventional superconductor, allowing electric currents to pass through without resistance or wasted energy.

    This “magic-angle” transformation in bilayer graphene was observed for the first time in 2018 in the group of Pablo Jarillo-Herrero, the Cecil and Ida Green Professor of Physics at MIT...

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