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- 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.

References in corpus (2)

• High-Quality Planar high-Tc Josephson Junctions
• Mott insulator phases and first-order melting in BSCCO crystals with periodic surface holes

Cited by in corpus (1)

• Unusual magneto-transport of YBa2Cu3O7-d films due to the interplay of anisotropy, random disorder and nanoscale periodic pinning