1,100 Words

Sneaky Superconductivity

The electrical conductivity of a sheet of graphene under a magnetic field is depicted by the colors in these two images. As the magnetic field increases from the bottom to the top of the image, the conductivity decreases (brighter colors). Superconductivity should only exist at low magnetic fields, as seen in the left panel. But physicist Gleb Finkelstein and co-authors François Amet and Chung-Ting Ke recently discovered surprising new regions of superconductivity, shown by additional dark spots in the right panel. This superconductivity could only exist if electrical current flows via a new physical mechanism that may be used to create new devices like quantum computers.