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Published January 2008 | Supplemental Material
Journal Article Open

Controlled Fabrication and Electrical Properties of Long Quasi-One-Dimensional Superconducting Nanowire Arrays


We report a general method for reliably fabricating quasi-one-dimensional superconducting nanowire arrays, with good control over nanowire cross section and length, and with full compatibility with device processing methods. We investigate Nb nanowires with individual nanowire cross sectional areas that range from bulklike to 10 × 11 nm, and with lengths from 1 to 100 μm. Nanowire size effects are systematically studied. In particular, a comprehensive investigation of influence of nanowire length on superconductivity is reported for the first time. All results are interpreted within the context of phase-slip models.

Additional Information

© 2008 American Chemical Society. Received 2 September 2007. Published online 6 December 2007. Published in print 1 January 2008. We thank Yue Zou and Wan Li (Cornell) for helpful discussions, and Kevin Kan and Hoc Ngo (UCLA Nanolab) for their assistance in device fabrication. This work was supported primarily by the Department of Energy (DE-FG02-04ER46175). Infrastructure supporting this project was supported by DARPA and by the National Science Foundation (NSF-CCF-05204490).

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Supplemental Material - nl072227zsi20070902_032532.pdf


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