Superconductivity of Freestanding Tungsten Nanofeatures Grown by Focused-Ion-Beam
Abstract:Freestanding tungsten composite nanofeatures were grown by focused-ion-beam-induced deposition with 1 pA ion beam current. The temperature dependent electrical measurements show that the flying nanoscale tungsten is conducting with a room temperature resistivity of 550 Ω cm. It is also superconducting with a Tc above 5.1 K and can be repeatedly thermally cycled. Our results suggest that FIB direct-writing of three-dimensional tungsten composites might be a potential approach to fabricate vertical nanodevices and mask-free superconducting devices.
Document Type: Research Article
Publication date: November 1, 2010
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