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Physicists in the US and Japan have observed superconductivity in a graphene-based material during the application of very high magnetic fields. What is more, the superconductivity re-emerges after dropping to zero as the field strength is increased.

The team, led by Pablo Jarillo-Herrero at the Massachusetts Institute of Technology, spotted the curious behaviour in magic-angle twisted trilayer graphene (MATTG), which is a member of a family of 2D materials that have extraordinary properties. The team’s observations suggest that MATTG displays the extremely rare property of 2D spin-triplet superconductivity – which could be used to create more resilient quantum computers.

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