Tunable superconducting nanoinductors.

نویسندگان

  • Anthony J Annunziata
  • Daniel F Santavicca
  • Luigi Frunzio
  • Gianluigi Catelani
  • Michael J Rooks
  • Aviad Frydman
  • Daniel E Prober
چکیده

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 µm(-1) for NbN and 44 pH µm(-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.

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عنوان ژورنال:
  • Nanotechnology

دوره 21 44  شماره 

صفحات  -

تاریخ انتشار 2010