Imprinting nanoporous alumina patterns into the magneto-transport of oxide superconductors

J. E. Villegas; I. Swiecicki; R. Bernard; A. Crassous; J. Briatico; T. Wolf; N. Bergeal; J. Lesueur; C. Ulysse; G. Faini; X. Hallet; L. Piraux

doi:10.1088/0957-4484/22/7/075302

arXiv · 1101.3172

Imprinting nanoporous alumina patterns into the magneto-transport of oxide superconductors

J. E. Villegas·I. Swiecicki·R. Bernard·A. Crassous·J. Briatico·T. Wolf·N. Bergeal·J. Lesueur·C. Ulysse·G. Faini·X. Hallet·L. Piraux

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Abstract

We used oxygen ion irradiation to transfer the nanoscale pattern of a porous alumina mask into high- superconducting thin films. This causes a nanoscale spatial modulation of superconductivity and strongly affects the magneto-transport below, 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.

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J. E. Villegas, I. Swiecicki, R. Bernard, A. Crassous, J. Briatico, T. Wolf, N. Bergeal, J. Lesueur, C. Ulysse, G. Faini, X. Hallet, L. Piraux. 2011-01-17. Imprinting nanoporous alumina patterns into the magneto-transport of oxide superconductors. https://doi.org/10.1088/0957-4484%2F22%2F7%2F075302

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