Possibility of fabricating an inductive high-speed detector for electromagnetic radiation using thin YBa2Cu3O7-delta films

It is shown that an inductive high-speed nonequilibrium detector for electr omagnetic radiation can be fabricated using thin YBaCuO films. An electroni c detection regime has been obtained for the first time using a low-tempera ture inductive YBaCuO detector in the measuring frequency band Delta f = 1- 50 MHz and it has been shown that no bolometric detection regime exists at operating temperatures far below the superconducting transition. The time c onstant of the low-temperature inductive YBaCuO detector in the electronic regime is determined only by the electron-phonon interaction time in the no dal regions tau(e-ph)(d). The detector has the following limiting character istics: when the operating temperature is reduced from 10 to 1 K, the time constant tau(D) varies between 10 and 100 ps and the sensitivity D* improve s substantially from 10(9) to 4 x 10(12) W-1 cm Hz(1/2). (C) 1999 American Institute of Physics. [S1063-7850(99)01801- 7].