Magnetic field dependence of the coupling efficiency of a superconducting transmission line due to the proximity effect

S. Zhu, T. Zijlstra, Alexandre Avraamovitch Golubov, M. van den Bemt, A.M. Baryshev, T.M. Klapwijk

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The coupling efficiency of a Nb superconducting transmission line has been measured using a Fourier transform spectrometer for different magnetic fields. It is found that the coupling decreases with increasing magnetic field when the frequency is close to the gap of the Nb superconductor. This is attributed to the changes of the surface impedance of the proximity-coupled superconductor/normal-metal bilayers in the transmission line.
Original languageUndefined
Pages (from-to)253502
JournalApplied physics letters
Issue number25
Publication statusPublished - 2009


  • IR-73198

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