title: Superconducting ferecrystals: turbostratically disordered atomic-scale layered (PbSe)1.14(NbSe2)n thin films.
abstract: Hybrid electronic heterostructure films of semi- and superconducting layers possess very different properties from their bulk counterparts. Here, we demonstrate superconductivity in ferecrystals: turbostratically disordered atomic-scale layered structures of single-, bi- and trilayers of NbSe2 separated by PbSe layers. The turbostratic (orientation) disorder between individual layers does not destroy superconductivity. Our method of fabricating artificial sequences of atomic-scale 2D layers, structurally independent of their neighbours in the growth direction, opens up new possibilities of stacking arbitrary numbers of hybrid layers which are not available otherwise, because epitaxial strain is avoided. The observation of superconductivity and systematic Tc changes with nanostructure make this synthesis approach of particular interest for realizing hybrid systems in the search of 2D superconductivity and the design of novel electronic heterostructures.
authors.affiliation: Novel Materials Group, Humboldt-Universität zu Berlin, 12489 Berlin, Germany.
authors.forename: Corinna
authors.initials: C
authors.lastname: Grosse
authors.affiliation: Department of Chemistry, University of Oregon, Eugene, Oregon 97403, United States.
authors.forename: Matti B
authors.initials: MB
authors.lastname: Alemayehu
authors.affiliation: Department of Chemistry, University of Oregon, Eugene, Oregon 97403, United States.
authors.forename: Matthias
authors.initials: M
authors.lastname: Falmbigl
authors.affiliation: Novel Materials Group, Humboldt-Universität zu Berlin, 12489 Berlin, Germany.|Ferdinand-Braun-Institut, Leibniz-Institut für Höchstfrequenztechnik, 12489 Berlin, Germany.
authors.forename: Anna
authors.initials: A
authors.lastname: Mogilatenko
authors.affiliation: Novel Materials Group, Humboldt-Universität zu Berlin, 12489 Berlin, Germany.
authors.forename: Olivio
authors.initials: O
authors.lastname: Chiatti
authors.affiliation: Department of Chemistry, University of Oregon, Eugene, Oregon 97403, United States.
authors.forename: David C
authors.initials: DC
authors.lastname: Johnson
authors.affiliation: Novel Materials Group, Humboldt-Universität zu Berlin, 12489 Berlin, Germany.
authors.forename: Saskia F
authors.initials: SF
authors.lastname: Fischer