Title :
Observation of Bifurcations and Hysteresis in Nonlinear NbN Superconducting Microwave Resonators
Author :
Abdo, Baleegh ; Arbel-Segev, Eran ; Shtempluck, Oleg ; Buks, Eyal
Author_Institution :
Dept. of Electr. Eng. & Microelectron. Res. Center, Technion-Israel Inst. of Technol., Haifa
Abstract :
In this paper, we report some extraordinary nonlinear dynamics measured in the resonance curve of NbN superconducting stripline microwave resonators. Among the nonlinearities observed: abrupt bifurcations in the resonance response at relatively low input powers, asymmetric resonances, multiple jumps within the resonance band, resonance frequency drift, frequency hysteresis, hysteresis loops changing direction and critical coupling phenomenon. Weak links in the NbN grain structure are hypothesized as the source of the nonlinearities
Keywords :
bifurcation; critical phenomena; crystal microstructure; hysteresis; niobium compounds; nonlinear dynamical systems; superconducting microwave devices; superconducting resonators; NbN; asymmetric resonances; bifurcations; critical coupling phenomenon; frequency hysteresis; grain structure; hysteresis loops; input powers; multiple jumps; nonlinear dynamics; nonlinear superconducting stripline microwave resonators; resonance band; resonance curve; resonance frequency drift; superconducting microwave resonators; Bifurcation; Geometry; High temperature superconductors; Hysteresis; Resonance; Resonant frequency; Stripline; Superconducting microwave devices; Superconducting transmission lines; Superconductivity; Bifurcations; NbN; hysteresis; jumps; microwave resonators; nonlinear effects;
Journal_Title :
Applied Superconductivity, IEEE Transactions on
DOI :
10.1109/TASC.2006.881823
