2000/02/14 by Rebecca Seviour, R. Seviour, A. F. Volkov · 1 citation
Materials Science · Physics and Astronomy · #Condensed matter physics #Critical current #Current (fluid) #Mesoscopic physics #Organic and Molecular Conductors Research #Phase (matter) #Physics #Physics of Superconductivity and Magnetism #Quantum and electron transport phenomena #Quantum mechanics #Superconductivity #Thermodynamics #cond-mat.mes-hall #cond-mat.supr-con
paper · pdf · doi:10.1103/physrevb.61.r9273
4 page, 3 figures. To be puplished in PRB Rapid com
arxiv created 2000/02/14 · openalex publication_date 2000/04/01 · arxiv updated 2009/11/30 · openalex created_date 2016/06/24 · openalex updated_date 2026/08/05
We analyze the measured critical current Im in a mesoscopic four-terminal superconductor--normal-metal--superconductor (S/N/S) structure. The current through the S/N interface is shown to consist not only of the Josephson component Icsin\ensuremathφ, but also a phase-coherent part Isgcos\ensuremathφ of the subgap current. The current Im is determined by both components Ic and Isg, and depends in a nonmonotonic way on the voltage V between superconductors and normal reservoirs reaching a maximum at V\ensuremath≅\ensuremathΔ/e. The obtained theoretical results are in qualitative agreement with recent experimental data.