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

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arxiv 1101.3172 v1 pith:R7MIBEND submitted 2011-01-17 cond-mat.supr-con cond-mat.mes-hallcond-mat.mtrl-sci

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
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C. Ulysse G. Faini X. Hallet L. Piraux
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classification cond-mat.supr-con cond-mat.mes-hallcond-mat.mtrl-sci
keywords nanoscalealuminairradiationmagneto-transportoxidesuperconductingaffectsbelow
verification ladder T0 review T1 audit T2 compute T3 formal T4 reserved
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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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