An unusual superconductor
Professor Wang Jian at Peking University and collaborators investigated the superconducting properties of two-dimensional crystalline superconducting PdTe2 films grown by molecular beam epitaxy. They observed the experimental evidence of anomalous metallic state and detected type-II Ising superconductivity existing in centrosymmetric systems. Moreover, the superconductivity of PdTe2 films remains almost the same for more than 20 months without any protection layer. This macro-size ambient-stable superconducting system with strong spin-orbit coupling shows great potentials in superconducting electronic and spintronic applications. The paper was published online in Nano Letters and selected for the Editors' Choice of Science with a title of "An unusual superconductor" (Science 369, 388 2020).