Double-barrier Josephson junctions: theory and experiment
نویسندگان
چکیده
منابع مشابه
Double-Barrier Josephson Junctions: Theory and Experiment
New theoretical and experimental results on double-barrier SIS’IS Josephson junctions are presented (1 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/AI/Nb junctions, is extended to the non-equilibrium regime of finite voltage. In particular, a...
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We study nonequilibrium charge transport in a double-barrier Josephson junction, including nonstationary phenomena, using the time-dependent quasiclassical Keldysh Green’s function formalism. We supplement the kinetic equations by appropriate time-dependent boundary conditions and solve the time-dependent problem in a number of regimes. From the solutions, current-voltage characteristics are de...
متن کاملEquilibrium properties of double-screened dipole-barrier SINIS Josephson junctions
We report on a self-consistent microscopic study of the dc Josephson effect in SINIS junctions, where screened dipole layers at the SN interfaces generate a double-barrier multilayered SIN structure. Our approach starts from a microscopic Hamiltonian defined on a simple cubic lattice, with an attractive Hubbard term accounting for the short coherence length superconducting order in the semi-inf...
متن کاملCurrent–voltage characteristics of asymmetric double-barrier Josephson junctions
Article history: Received 17 January 2014 Accepted 2 February 2014 Available online 10 February 2014
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The current-phase (I-φ) relation of a double-barrier Josephson junction with a two-gap superconductor as intermediate electrode is derived by means of a simplified version of Ohta’s model. As in conventional double-barrier Josephson junctions, a marked skewness in the I-φ curves is present. Moreover, as in heterotic Josephson devices, a reduction of the maximum Josephson current is predicted. A...
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ژورنال
عنوان ژورنال: IEEE Transactions on Appiled Superconductivity
سال: 2001
ISSN: 1051-8223
DOI: 10.1109/77.919551