Patterning of ultrathin YBCO nanowires using a new focused-ion-beam process

Abstract

Manufacturing superconducting circuits out of ultrathin films is a challenging task when it comes to patterning complex compounds, which are likely to be deteriorated by the patterning process. With the purpose of developing high-T${}_c$ superconducting photon detectors, we designed a novel route to pattern ultrathin YBCO films down to the nanometric scale. We believe that our method, based on a specific use of a focused-ion beam, consists in locally implanting Ga^{3+} ions and/or defects instead of etching the film. This protocol could be of interest to engineer high-T${}_c$ superconducting devices (SQUIDS, SIS/SIN junctions and Josephson junctions), as well as to treat other sensitive compounds.

13 pages, 7 figures

References in corpus (2)

• High performance NbN nanowire superconducting single photon detectors fabricated on MgO substrates
• Approaches to Single Photon Detection

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