London Penetration Depth Measurements Using Tunnel Diode Resonators

Russell Giannetta, Antony Carrington, Ruslan Prozorov

Research output: Contribution to journalArticlepeer-review


The London penetration depth λ is the basic length scale for electromagnetic behavior in a superconductor. Precise measurements of λ as a function of temperature, field and impurity scattering have been instrumental in revealing the nature of the order parameter and pairing interactions in a variety of superconductors discovered over the past decades. Here we recount our development of the tunnel-diode resonator technique to measure λ as function of temperature and field in small single crystal samples. We discuss the principles and applications of this technique to study unconventional superconductivity in the copper oxides and other materials such as iron-based superconductors. The technique has now been employed by several groups world-wide as a precision measurement tool for the exploration of new superconductors.

Original languageEnglish (US)
JournalJournal of Low Temperature Physics
StateAccepted/In press - 2021


  • London penetration depth
  • Tunnel-diode resonator

ASJC Scopus subject areas

  • Atomic and Molecular Physics, and Optics
  • Materials Science(all)
  • Condensed Matter Physics


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