1999/10/29 by E. Goldobin, A. V. Ustinov
Physics and Astronomy · #Atomic and Subatomic Physics Research #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.62.1427
published as Phys. Rev. B 62, 1427 (2000) · 6 pages + 4 figures, submitted to PRB
arxiv created 1999/10/29 · openalex publication_date 2000/07/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/07/28
We study experimentally and theoretically the influence of phase-whirling (resistive) state in one junction of a twofold Josephson stack on the fluxon motion in the other junction. In experiment, we measure the fluxon velocity versus current in one junction as a function of the state (Meissner or resistive) of the neighboring junction. The analysis, made for the limit of high fluxon density, shows that the interaction with the resistive state results in an increase of the effective damping for the moving fluxon and, therefore, in reduction of its velocity. Numerical simulations confirm this result for various fluxon densities. The experimental data are in good agreement with the theoretical predictions. In addition, the fluxon step measured experimentally has a rather peculiar structure with back and forth bending regions which is understood as a manifestation of the photon absorption in the neighboring junction.