Abstract
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 language | English |
|---|---|
| Pages (from-to) | 119–146 |
| Journal | Journal of Low Temperature Physics |
| Volume | 208 |
| DOIs | |
| Publication status | Published - 18 Oct 2021 |
Bibliographical note
Funding Information:R.P. was supported by the U.S. Department of Energy (DOE), Office of Science, Basic Energy Sciences, Materials Science and Engineering Division. Ames Laboratory is operated for the U.S. DOE by Iowa State University under Contract DE-AC02-07CH11358. AC is supported by UK EPSRC Grant EP/R011141/1. RWG was supported by DOE award DE-AC0298CH1088 (Center for Emergent Superconductivity) and National Science Foundation Award Numbers NSF-DMR91-20000 and NSF-DMR-05-03882.
Publisher Copyright:
© 2021, The Author(s), under exclusive licence to Springer Science+Business Media, LLC, part of Springer Nature.
Keywords
- London penetration depth
- Tunnel-diode resonator