2010/07/31 by Anthony Annunziata, Anthony J Annunziata, Daniel F Santavicca +9 · 2 citations
Physics and Astronomy · #Physics of Superconductivity and Magnetism #Superconducting and THz Device Technology #Superconductivity in MgB2 and Alloys #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1088/0957-4484/21/44/445202
published as Nanotechnology 21, 445202 (2010) · 11 pages, 5 figures
arxiv created 2010/09/27 · openalex publication_date 2010/10/05 · arxiv updated 2014/05/20 · openalex created_date 2025/10/10 · openalex updated_date 2026/07/31
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 for NbN and 44 pH/um 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.