YBa2Cu3O7 nano-bridge junctions and dc SQUIDs made by focused ion beam milling

David H.A. Blank, W.E. Booij, Wilfred Booij, Johannes W.M. Hilgenkamp, B.W. Vulink, Bart Vulink, Dick Veldhuis, Horst Rogalla

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YBa/sub 2/Cu/sub 3/O/sub 7/ nano-bridges with widths ranging from 200 to 800 nm were made using Focused Ion Beam milling. The I-V characteristics of the narrowest nano-bridges show, under microwave irradiation, pronounced Shapiro steps up to the transition temperature. An inductively shunted single layer SQUID, using these nano-bridges, has been realised by a combination of Focused Ion Beam milling and selective epitaxial growth. Flux to voltage modulation up to 82 K was observed, with a maximum modulation depth of 3.7 /spl mu/V at 78 K.
Original languageUndefined
Pages (from-to)2786-2789
Number of pages4
JournalIEEE transactions on applied superconductivity
Issue number5
Publication statusPublished - 1995


  • IR-24264
  • METIS-129064

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