 Stochastic dynamics of the resistively shunted superconducting tunnel junction system under the impact of thermal fluctuationsShenglan Yuan Chaos, Solitons & Fractals, 2025, vol. 199, issue P3 Abstract: In this work, a Josephson junction consisting of two superconducting layers sandwiching an insulating layer is explored, which is subject to the effects of thermal fluctuations. A clockwise hysteresis cycle in the current–voltage characteristic curve is demonstrated. Additionally, the bifurcation of a planar limit cycle is established. The numerous stochastic thermodynamic properties of the resistively shunted superconducting tunnel junction system are described, considering the influence of three specific parameters: conductance, current bias and noise intensity. Moreover, the probability density is characterized using the Fokker–Planck equation. Crucially, simulations reveal a regime of intermediate thermal noise intensities that maximizes metastable state lifetimes. This noise-enhanced stability effect, characterized by non-monotonic mean first passage time profiles, demonstrates how noise can stabilize or accelerate barrier escape. Keywords: Stochastic dynamics; Resistively shunted junction; Thermal fluctuations; Hysteresis; Bifurcation (search for similar items in EconPapers) Downloads: (external link) Related works: Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text Persistent link: https://EconPapers.repec.org/RePEc:eee:chsofr:v:199:y:2025:i:p3:s0960077925009300 DOI: 10.1016/j.chaos.2025.116917 Access Statistics for this article Chaos, Solitons & Fractals is currently edited by Stefano Boccaletti and Stelios Bekiros More articles in Chaos, Solitons & Fractals from Elsevier |
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