Researchers create tunable monolithic SQUID component based on twisted bilayer graphene

Researchers from Switzerland's ETH Zurich and Japan's National Institute for Materials Science (NIMS) have produced the first superconducting quantum interference device, or SQUID, from twisted graphene for the purpose of demonstrating the interference of superconducting quasiparticles. This work is based on former research in which, about a year ago, a team of researchers led by Klaus Ensslin and Thomas Ihn at ETH Zurich's Laboratory for Solid State Physics was able to demonstrate that twisted graphene could be used to create Josephson junctions, the fundamental building blocks of superconducting devices.