Abstract
It has been found that superconducting thin films in the resistive current state can initiate, in addition to Josephson oscillations, non-Josephson oscillation (NJO) of much lower frequencies (10 6–10 8 Hz). Characteristically, the NJO frequency f 0 is extremely sensitive to external parameters such as d.c. current, temperature and infra-red (IR) irradiation. This high sensitivity of the oscillation frequency to external influences holds much promise for the development of a new class of detectors. The present work was performed using the temperature sensitivity of the effect, which may be as high as 10 11 Hz K −1, and then considering the possibility of developing an IR bolometer.
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