Similarities in the insulating states of twisted bilayer graphene and cuprates

High resolution scanning tunneling microscope (STM) image of twisted bilayer graphene at the ‘magic angle’ where electron interactions are maximized. Right: A zoom into the STM image with the corresponding lattices of the twisted bilayer graphene overlayed. Credit: Alexander Kerelsky In recent decades, enormous research efforts have been expended on the exploration and explanation of […]

Experiments explore the mysteries of ‘magic’ angle superconductors

A team led by Princeton physicist Ali Yazdani has shown that strong electron interactions play a key role in the superconductivity that has been discovered in graphene, a material made up of single-layer sheets of carbon atoms. Here, two graphene sheets stacked on each other with a twist make a long-wavelength moirĂ© pattern. Credit: Designed […]