Abstract
We have observed Josephson effect in bulk YBaCuO. The size of bulk is 7.5×2.2×0.3 mm and the microwave frequency is 9.82 GHz in our experiment. Several microwave induced steps can easily be observed. When an external magnetic field is applied to the bulk, the critical supercurrent at zero voltage is suppressed significantly. It has been demonstrated that YBaCuO bulk can be seen as a network of Josephson junctions. An experimental study of Josephson effect in bulk YBaCuO at millimeter wave frquency is in progress.
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Cai, S.Z., Hou, Y.S., Yu, E.X. et al. An experimental study of Josephson effect in bulk YBaCUO. Int J Infrared Milli Waves 10, 231–236 (1989). https://doi.org/10.1007/BF01011238
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DOI: https://doi.org/10.1007/BF01011238