[15a-D61-1~10] 11.4 Analog applications and their related technologies

[15a-D61-7] Responsivities of the superconducting resonator in consideration of the gap-broadening effect

〇Takashi Noguchi¹, Shibo Shu², Agnes Dominjon¹, Yutaro Sekimoto¹ (1.NAOJ/NINS, 2.Tokyo Univ.)

Keywords:superconductor, resonator, responsivity

The phase and amplitude resposivities of a superconducting resonator were calculated in cosideration of the gap-broadening effect. It was found that the phase and amplitude responsivities rapidly decrease and go to zero well below Tc, which have been usually observed in actual superconducting resonators. We think that such reduction in responsivities of the superconducting resonators is caused by the quasiparticles in the intra-gap states induced by the gap-broadening.