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XeF2 gas assisted focused electron beam induced etching of niobium thin films: towards direct write editing of niobium superconducting devices

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Nanoscale Horiz., 2025, 10,369-378
DOI: 10.1039/D4NH00407H, Communication
Spencer Gellerup, Reece Emery, Scott T. Retterer, Steven J. Randolph, Philip D. Rack
Focused electron beam induced etching (FEBIE) of Nb films produced a maximum etching yield of 3 Nb atoms/e while varying beam energy, beam current, dwell time, and XeF2 precursor working pressure. An optimized etch resolution of 17 nm was achieved.
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