Microwave detection at metal–high-T_csuperconducting ceramics point contact

Abstract

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.

The Effect of the Pressure for the Formation of YBa2Cu3O7–d Bulk Ceramics with Domestic Microwave Oven

“…This material is surely supposed to be the most reliable high Tc superconductor. Nowadays, sophisticated study has been performed: the YBCO/metal interface and its application [3,4], YBCO composites with Ag [5] or polymer [6]. Comprehensive survey of current knowledge on this material is described in a book [7].…”