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Josephson detectors based on YBa2Cu3O7-x [100]-tilt bicrystal junctions were fabricated and their frequency-selective and broadband modes of operation were studied at terahertz frequencies. The resistances of the [100]-tilt junctions were in the range of 1-200 Ohm and their characteristic voltages were up to 8 mV at 4.2 K. Values of the responsivity up to at radiation frequency of 0.7 THz were demonstrated...
Detection of THz radiation by YBa2Cu3O7-x Josephson bicrystal junctions with high characteristic voltages IcRn up to 8 mV has been studied. The high-resistance junctions have demonstrated a classical detection of radiation with frequencies up to terahertz range. It was shown by numerical simulations, that the values of noise equivalent power NEP < 5 times10-15 W/Hz1/2 can be reached at the frequencies...
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