Hot spot formation in focused-ion-beam-fabricated YBa2Cu3O7-x (YBCO) nanobridges with high critical current densities.

08:00 EDT 15th April 2019 | BioPortfolio

Summary of "Hot spot formation in focused-ion-beam-fabricated YBa2Cu3O7-x (YBCO) nanobridges with high critical current densities."

We report on the fabrication and evaluation of nanoscale YBCO constrictions using focused-ion-beam (FIB) techniques for potential application as YBCO bolometers. A gold protective layer was found to be critical for supressing contamination from gallium ions in order to obtain high critical current densities. Further processing using a radio-frequency plasma to remove the gold protective layer has also been studied and was found to be effective in minimizing sample damage resulting from overheating. Current-voltage measurement indicate that the nanobridges go through the transition from superconducting to normal state with different dissipation mechanism including flux creep and hot spot formation.


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This article was published in the following journal.

Name: Nanotechnology
ISSN: 1361-6528


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