Microwave detection at metal–high-Tcsuperconducting ceramics point contact

Experimental results of observed microwave detection at a point contact of metal-high-temperature superconducting YBa2Cu3O7-x (YBCO) ceramics at room and liquid nitrogen temperatures are presented.The use of ceramics instead of a thin film allowed for a better heat removal from the point contact and reduction of output resistance down to 50 ohms.It is demonstrated that the observed detection is non-bolometric.The possibility to use YBCO ceramics-based detectors with properties comparable to those of semiconducting analogues is discussed.