Dynamic properties of asymmetric double Josephson junction stack with quasiparticle imbalance. (21st May 2019)

• Record Type: Journal Article
• Authors: Bakurskiy, S V; Neilo, A A; Klenov, N V; Soloviev, I I; Kupriyanov, M Yu
• Is Part Of: Nanotechnology. Volume 30:Number 32(2019)
• Publication Date: 2019-05-21
• Subjects: Josephson structures -- superconducting electronics -- quasiparticle charge imbalance -- Josephson dynamics -- critical current; Nanotechnology -- Periodicals; Nanotechnology -- Periodicals; Nanotechnology; Publications périodiques; Nanotechnologies; Periodicals; 620.5
• DOI: 10.1088/1361-6528/ab1a8e
• Languages: English
• ISSNs: 0957-4484

Abstract

Abstract: We study analytically and numerically the influence of the quasiparticle charge imbalance on the dynamics of the asymmetric Josephson stack formed by two inequivalent junctions: the fast capacitive junction JJ 1 and slow non-capacitive junction JJ 2 . We find, that the switching of the fast junction into resistive state leads to significant increase of the effective critical current of the slow junction. At the same time, the initial switching of the slow junction may either increase or decrease the effective critical current of the fast junction, depending on ratio of their resistances and the value of the capacitance. Finally, we have found that the slow quasiparticle relaxation (in comparison with Josephson times) leads to appearance of the additional hysteresis on current–voltage characteristics.