Unveiling the Unusual Crystalline State in a Topological Superconductor

Researchers have discovered a new crystalline superconducting state in uranium ditelluride (UTe2), challenging the conventional understanding of superconductivity. This finding could have implications for the development of quantum computers. The study used scanning Josephson tunnelling microscopy to visualize spatial modulations of the superconducting pairing potential in UTe2, revealing the presence of electron pair-density waves (PDW) within the background superfluid. The PDW state was found to be common to all types of Cooper-pair symmetries, including p-wave superconductors. This discovery could contribute to the development of more stable and practical quantum computers using UTe2 as a quantum bit material.