Dual frequency resonator for the correct determination of the in-field surface impedance frequency dependence of superconductors

• Abstract:

  In high frequency applications of superconductors, a relevant parameter used to synthetically describe their performances in terms of surface resistance (proportional to power losses) dependence on the operating frequency is the so-called pinning frequency νp. Customarily, high sensitivity resonant techniques, intrinsically operating at discrete frequencies, are used to estimate νp. By exploiting a dual frequency resonator, we show here that the inaccurate evaluation of νp in the common approach based on single-frequency measurements leads to heavy underestimations of the superconductor surface resistance.
• Download:

  IMEKO-TC4-2020-15.pdf
• DOI:

  _unreg_tc4-2020.15

Event details:

• IMEKO TC:

  TC4
• Event name:

  TC4 Symposium 2020 (ONLINE)
• Title:

  24^th IMEKO TC4 Symposium and 22^nd International Workshop on ADC and DAC Modelling and Testing (IWADC)

• Place:

  Palermo, ITALY
• Time:

  14 September 2020 - 16 September 2020