SUPERCONDUCTIVITY IN THE NOVEL SEMICONDUCTING SUPERLATTICES

Novel superconducting superlattices (SL) with transition temperature 4 -6 K consisting only of semiconducting materials are discovered. Among them there are multilayers containing ferromagnetic chalcogenide EuS. Single films of the semiconducting materials constituting SL do not r eveal superconductivity, and it appears only in multilayered systems. It is shown that superconductivity is confined to the interfaces betwe en two semiconductors. The possible correlation between superconductiv ity and interfacial regular grids of misfit dislocations is discussed.