Surface Impedance of Type-I Superconductors: Calculation of the Effect of a Static Magnetic Field
- 10 September 1968
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review B
- Vol. 173 (2) , 516-525
- https://doi.org/10.1103/physrev.173.516
Abstract
The microwave surface impedance of pure type-I superconductors in a static magnetic field is calculated at frequencies in the range . In the theory developed, the effect of the static field is to change the quasiparticle energies by an amount p·v, where p is the Fermi momentum and v is the drift velocity associated with the Meissner current. The results are in general agreement with the high-frequency () experiments, and show the "anomalous" decrease in both surface resistance and reactance that occurs in the experiments at lower frequencies (). Finally, the results lead to a simple quadratic field dependence of the surface reactance in the low-frequency limit (), where the form of the calculation is similar to both the experimental results and the predictions of the Ginzburg-Landau theory.
Keywords
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