Transport Properties of NbN-Cu Bilayer Superconducting Nanowires

We present the DC transport characteristics of NbN-Cu bilayer superconducting nanowires. Damascene Cu-covered NbN superconducting nanowires have been fabricated, with NbN thickness varying from 6 nm to 20 nm and width ranging from 100 nm to 180 nm for the NbN-Cu nanowires. Measurements were performe...

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Veröffentlicht in:	IEEE transactions on applied superconductivity 2024-05, Vol.34 (3), p.1-6
Hauptverfasser:	Shah, Archit, Kar, Soumen, Tillman, Chase C., Bankson, Stephen, Frost, Hunter, Bhatia, Ekta, Olson, Stephen, Mucci, John, Nalaskowski, Jakub, Martinick, Brian, Schujman, Sandra, Murray, Thomas, Johnson, Corbet S., Wells, Ilyssa, Rao, Satyavolu S. Papa, Sellers, John A., Hamilton, Michael C.
Format:	Artikel
Sprache:	eng
Schlagworte:	Bilayers Cryogenics Current measurement damascene process Electrical resistance measurement Nanowires NbN Niobium nitride Resistance Room temperature Semiconductor device measurement Superconducting nanowires Superconductivity superconductor-normal metal bilayer nanowires thermal phase slip Transport properties
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Zusammenfassung:	We present the DC transport characteristics of NbN-Cu bilayer superconducting nanowires. Damascene Cu-covered NbN superconducting nanowires have been fabricated, with NbN thickness varying from 6 nm to 20 nm and width ranging from 100 nm to 180 nm for the NbN-Cu nanowires. Measurements were performed from room temperature down to \sim850 mK and the data was analyzed using thermal phase slip models that demonstrate strong agreement.
ISSN:	1051-8223 1558-2515
DOI:	10.1109/TASC.2024.3377193