title: Imprinting nanoporous alumina patterns into the magneto-transport of oxide superconductors.
abstract: We used oxygen ion irradiation to transfer the nanoscale pattern of a porous alumina mask into high-T(C) superconducting thin films. This causes a nanoscale spatial modulation of superconductivity and strongly affects the magneto-transport below T(C), which shows a series of periodic oscillations reminiscent of the Little-Parks effect in superconducting wire networks. This irradiation technique could be extended to other oxide materials in order to induce ordered nanoscale phase segregation.
authors.affiliation: Unité Mixte de Physique CNRS/Thales, Palaiseau, France. javier.villegas@thalesgroup.com
authors.forename: J E
authors.initials: JE
authors.lastname: Villegas
authors.forename: I
authors.initials: I
authors.lastname: Swiecicki
authors.forename: R
authors.initials: R
authors.lastname: Bernard
authors.forename: A
authors.initials: A
authors.lastname: Crassous
authors.forename: J
authors.initials: J
authors.lastname: Briatico
authors.forename: T
authors.initials: T
authors.lastname: Wolf
authors.forename: N
authors.initials: N
authors.lastname: Bergeal
authors.forename: J
authors.initials: J
authors.lastname: Lesueur
authors.forename: C
authors.initials: C
authors.lastname: Ulysse
authors.forename: G
authors.initials: G
authors.lastname: Faini
authors.forename: X
authors.initials: X
authors.lastname: Hallet
authors.forename: L
authors.initials: L
authors.lastname: Piraux