Measuring Changes in Inductance With Microstrip Resonators

Journal Article · Mon Feb 18 00:00:00 EST 2019 · IEEE Transactions on Applied Superconductivity

DOI:https://doi.org/10.1109/TASC.2019.2899867· OSTI ID:1507742

Lewis, Rupert M. ^[1]; Henry, Michael David ^[1]; Young, Travis Ryan ^[1]; Frank, Michael P. ^[1]; Wolak, Matthaus A. ^[1]; Missert, Nancy A. ^[1]

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1. Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)

In this work, we measure the frequency dependence of a niobium microstrip resonator as a function of temperature from 1.4 to 8.4 K. In a 2-micrometer-wide half-wave resonator, we find the frequency of resonance changes by a factor of 7 over this temperature range. From the resonant frequencies, we extract inductance per unit length, characteristic impedance, and propagation velocity (group velocity). We discuss how these results relate to superconducting electronics. Over the 2 K to 6 K temperature range where superconducting electronic circuits operate, inductance shows a 19% change and both impedance and propagation velocity show an 11% change.

• Research Organization: Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
• Sponsoring Organization: USDOE National Nuclear Security Administration (NNSA)
• Grant/Contract Number: AC04-94AL85000
• OSTI ID: 1507742
• Alternate ID(s): OSTI ID: 1593057
• Report Number(s): SAND--2019-2278J; 673034
• Journal Information: IEEE Transactions on Applied Superconductivity, Journal Name: IEEE Transactions on Applied Superconductivity Journal Issue: 5 Vol. 29; ISSN 1051-8223
• Publisher: Institute of Electrical and Electronics Engineers (IEEE)
• Country of Publication: United States
• Language: English

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