By determining how readily electron pairs flow through this material, scientists have taken a big step toward understanding its remarkable properties.
MIT and Harvard physicists have measured superfluid stiffness in "magic-angle" graphene, a material formed by stacking and twisting graphene sheets at a specific angle. Using a novel microwave resonator technique, they found the superfluid stiffness to be significantly higher than predicted by conventional theories, suggesting the superconductivity is governed by quantum geometry. Their findings, published in Nature, alongside a related study on magic-angle twisted trilayer graphene, enhance our understanding of superconductivity and could pave the way for advancements in quantum computing and room-temperature superconductors.
