1. Tunable superconducting nanoinductors.
- Author
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Anthony J Annunziata, Daniel F Santavicca, Luigi Frunzio, Gianluigi Catelani, Michael J Rooks, Aviad Frydman, and Daniel E Prober
- Subjects
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SUPERCONDUCTORS , *ELECTRIC inductors , *NIOBIUM , *NANOWIRES , *ELECTRIC inductance , *NANOSTRUCTURED materials - Abstract
We characterize inductors fabricated from ultra-thin, approximately 100 nm wide strips of niobium (Nb) and niobium nitride (NbN). These nanowires have a large kinetic inductance in the superconducting state. The kinetic inductance scales linearly with the nanowire length, with a typical value of 1 nH um [?] 1 for NbN and 44 pH um [?] 1 for Nb at a temperature of 2.5 K. We measure the temperature and current dependence of the kinetic inductance and compare our results to theoretical predictions. We also simulate the self-resonant frequencies of these nanowires in a compact meander geometry. These nanowire inductive elements have applications in a variety of microwave frequency superconducting circuits. [ABSTRACT FROM AUTHOR]
- Published
- 2010
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