A physicist whose joint measurements with R. E. Glover III used infrared and microwave transmission to probe superconductivity. The dissipative and reactive parts of electrical conductivity changed differently with frequency. Comparing tin and lead films exposed a common scaled response and an excitation threshold, providing a quantitative way to investigate the superconducting energy gap.[ref]
Conductivity of Superconducting Films for Photon Energies between 0.3 and 40kTc by R. E. Glover III and M. Tinkham. Abstract: complex conductivity, reduced-frequency scaling and gap interpretation
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