Making new layered superconductors using high entropy alloys

Researchers from Tokyo Metropolitan University have created new superconductors made of layers of bismuth sulfide (BiS2) and a high-entropy rare earth alloy oxyfluoride, containing five rare earth (RE) elements at the same crystallographic site. The new material retains superconducting properties over a wider range of lattice parameters than materials without high-entropy alloy states. Their work promises an exciting new strategy for designing new layered superconductors, a potentially key devel...