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The superconductivity of layered graphene
The odd superconductivity found in layered graphene may bring us closer to understanding room-temperature superconductors
Past experiments have shown that very cold stacks of two or three layers of graphene can superconduct, or perfectly conduct electricity without resistance and energy loss, if some of the sheets are rotated by a special angle. In trilayer graphene, researchers found surprising similarities between the kinetic inductance of their sample and the behaviour of a family of completely different superconductors – ones that maintain their special properties at much higher temperatures. For example, earlier this month a different team published research showing that two-layered crystals of a material called tungsten diselenide exhibit superconductivity when the layers are twisted relative to one another.
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