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Graphene, a single sheet of carbon atoms, has many extreme electrical and mechanical properties. Two years ago, researchers showed how two sheets laid on top of each other and twisted at just the right angle can become superconducting, so that the material loses its electrical resistivity. New work explains why this superconductivity happens in a surprisingly high temperature.

Researchers at Aalto University and the University of Jyväskylä showed that can be a superconductor at a much higher than expected, due to a subtle quantum mechanics effect of graphene's electrons. The results were published in Physical Review B. The findings were highlighted in Physics viewpoint by the American Physical Society, and looks set to spark lively discussion in the physics community.

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Category: Science