Electrically controlled Josephson elements
Yu. G. BevzaPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRV. I. KaramushkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRÉ. A. Kel’manPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRG. G. TzachPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSRI. M. DmitrenkoPhysicotechnical Institute of Low Temperatures, Academy of Sciences of the Ukrainian SSR
ABI
Abstract
Current-controlled cross-shaped thin-film structures are investigated. The nonstationary Josephson effect, the characteristics of which are determined by the value of the controlling current, is obtained near Tc on the current-controlled weak link. Long films that formed a cross-shaped structure had a high degree of homogeneity. The irradiation-induced critical current enhancement observed in these strips is described well by Éliashberg’s theory. After formation of the weak link the relative increase of the irradiation-induced critical current becomes larger and, simultaneously, the absolute current values decrease.
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