Researchers explore the superconducting limit of ‘magic angle’ graphene

When two sheets of are stacked together and offset at a slight angle, the bilayer material can produce numerous intriguing effects, notably superconductivity. Cornell University researchers have gained new understanding on how twisted bilayer graphene achieves this state, by identifying its highest achievable superconducting temperature – 60 Kelvin. The finding is said to be mathematically exact, a rare feat in the field, and is spurring new insights into the factors that fundamentally control superconductivity.