Twisted physics: Magic angle graphene produces switchable patterns of superconductivity

Last year, scientists demonstrated that twisted bilayer graphene—a material made of two atom-thin sheets of carbon with a slight twist—can exhibit alternating superconducting and insulating regions. Now, a new study in the journal Nature by scientists from Spain, the U.S., China and Japan shows that superconductivity can be turned on or off with a small voltage change, increasing its usefulness for electronic devices.