2005/03/31 by J. Mannik, Jaan Männik, S. Li +9 · 3 citations
Computer Science · Materials Science · Physics and Astronomy · #Chaos control and synchronization #Nonlinear Dynamics and Pattern Formation #Phase-change materials and chalcogenides #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.71.220509
published as Phys. Rev. B 71, 220509 (2005) · 4 pages, 4 figures
arxiv created 2005/03/31 · openalex publication_date 2005/06/24 · arxiv updated 2009/12/01 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We have measured and propose a model for switching rates in a hysteretic dc superconducting quantum interference device (SQUID) in the regime where phase-diffusion processes start to occur. We show that the switching rates in this regime are smaller than the rates given by Kramers' formula due to retrapping of the Josephson phase. The retrapping process, which is affected by the frequency dependent impedance of the environment of the dc SQUID, leads to a peaked second moment of the switching distribution as a function of temperature. The temperatures where the peaks occur are proportional to the critical current of the dc SQUID.