Double-barrier Josephson junctions: theory and experiment


Brinkman, A. and Cassel, D. and Golubov, A.A. and Kupriyanov, M. Yu. and Siegel, M. and Rogalla, H. (2001) Double-barrier Josephson junctions: theory and experiment. IEEE Transactions on Applied Superconductivity, 11 (1, Par). pp. 1146-1149. ISSN 1051-8223

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Abstract:New theoretical and experimental results on double-barrier SIS'IS Josephson junctions are presented (I is a tunnel barrier, S' is a thin film with critical temperature lower than that of S). The previously developed microscopic model for the stationary case, which describes the critical currents in Nb/Al/Nb junctions, is extended to the non-equilibrium regime of finite voltage. In particular, an intrinsic shunting resistance is estimated from I-V curves. We formulate the requirements for interface barriers in order to realize non-hysteretic SIS'IS junctions with high critical current density and IcR N products. A comparison with single-barrier SIS junctions with high critical current density is carried out
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Copyright:©2001 IEEE
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