Phase diffusions due to radio-frequency excitations in one-dimensional arrays of superconductor/ insulator/superconductor junctions

Saxon Liou, Watson Kuo, Y. W. Suen, C. S. Wu, C. D. Chen

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The de response of one-dimensional (ID) arrays of super-conductor/ insulator/superconductor (SIS) junctions under radio-frequency (RF) irradiation has been experimentally studied. The zero-bias resistance as a function of RF amplitude in the low-frequency regime shows an oscillatory behaviour, and can be explained using the phase fluctuation model for Cooper-pair tunnelling. It follows that an effective classical detector theory is applicable and the oscillation period can be compared with the superconducting gap. The results suggest a primary and direct RF detection scheme using ID SIS junction arrays.

Original languageEnglish
Article number073025
JournalNew Journal of Physics
Publication statusPublished - 2008 Jul 14


All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

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