Study of the skin effect in superconducting materials

TL;DR

This paper provides a theoretical analysis of the skin effect in superconductors, unifying normal and anomalous effects, and clarifies conditions for the penetration depth to match London's length, aiding experimental interpretation.

Contribution

It offers a unified theoretical framework for the skin effect in superconductors, including conditions for penetration depth equivalence to London's length.

Findings

Unified treatment of normal and anomalous skin effects

Conditions for penetration depth to equal London's length

Validation of assumptions used in experimental analysis

Abstract

The skin effect is analyzed to provide the numerous measurements of the penetration depth of the electromagnetic field in superconducting materials with a theoretical basis. Both the normal and anomalous skin effects are accounted for within a single framework. The emphasis is laid on the conditions required for the penetration depth to be equal to London's length, which enables us to validate an assumption widely used in the interpretation of all current experimental results.