Results 191 to 200 of about 69,087 (236)

Soliton dynamics in Josephson tunnel junctions

Physica Scripta, 1993
The non-linear dynamics of Josephson junctions is well described by the perturbed sine-Gordon equation together with the appropriate boundary conditions. A possible solution of the pure sine-Gordon equation are solitons. In the junction the (quasi) solitons manifest themselves as Josephson vortices, each of them carrying one magnetic flux quantum.
Doderer, T., Lachenmann, S. G., Ustinov, A. V., Quenter, D., Huebener, R. P.   +4 more
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Josephson tunnel junctions with monomolecular barriers

IEEE Transactions on Magnetics, 1983
We report here the fabrication of Josephson junction tunnel diodes in which the barrier has been deposited using the Langmuir-Blodgett technique. Diodes have been fabricated using lead-indium alloys and niobium nitride for the electrodes. The barrier was vinyl stearate polymerized by Co60γ radiation just prior to depositing the counter electrode.
G. Larkins, E. Thompson, M. Deen, C. Burkhart, J. Lando   +4 more
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Ge-Sn barrier Josephson tunnel junctions

Applied Physics Letters, 1978
A new form of superconducting Josephson tunnel junction has been developed in which superconducting electrons tunnel through thick (∼600 Å) barriers formed by evaporated Ge-Sn mixtures. By varying barrier composition and thickness a wide range of junction I-V characteristics can be obtained.
E. L. Hu, L. D. Jackel, A. R. Strnad, R. W. Epworth, R. F. Lucey, C. A. Zogg, E. Gornik   +6 more
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Josephson Tunneling Behaviors in NbN/AlN/NbN Junctions with an Ultrathin NbN Film

IEEE transactions on applied superconductivity, 2018
We fabricated epitaxial NbN/AlN/NbN tunnel junctions with an ultrathin NbN film as the base layer on single-crystal MgO (100) substrates. The measured thickness of the base layer was 4.7 nm.
Qiyu Zhang, Huiwu Wang, Xin Tang, Hang Xue, W. Peng, Zhen Wang   +5 more
semanticscholar   +1 more source

Tunneling characteristics of ultrasmall Josephson junctions

Physica B+C, 1981
Abstract The tunneling characteristics of ultrasmall Josephson junctions in the strong charge fluctuations regime are examined. We find that electrostatic effects strikingly alter the magnitude, area and phase dependence of the dc supercurrent as well as its magnetic and thermal characteristics.
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Josephson properties of transparent tunnel junctions

Low Temperature Physics, 2000
With allowance for possible deviations of the current–phase relation from the usual sinusoidal dependence, a modified Ferrell–Prange equation is used to examine the steady-state electrodynamics of transparent Josephson junctions in an external magnetic field.
Yu. V. Shlapak, A. L. Kasatkin, É. M. Rudenko   +2 more
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Flux trapping in Josephson tunnel junctions

Journal of Applied Physics, 1983
Effects of flux trapping in the electrodes of Josephson tunnel junctions on junction characteristics are studied experimentally in the case of the field-cooling process. The suppression of the critical current and the increase of the quasiparticle current of the junction due to the trapped flux are measured.
N. Uchida, K. Enpuku, Y. Matsugaki, S. Tomita, F. Irie, K. Yoshida   +5 more
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Voltage fluctuations in Josephson tunnel junctions

Physica B+C, 1981
Abstract Starting from microscopic theory of the Josephson tunnel junctions, the general expression for the power spectrum of small voltage fluctuations SV(ω) is obtained. According to this expression, SV(ω) could be considered as a result of parametric conversion of “original fluctuations” at composite frequencies ωn=ω+nωv ( ω v = 2 e V
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Specific capacitance of Josephson tunnel junctions

IEEE Transactions on Magnetics, 1981
The specific capacitance of several types of Josephson tunnel junctions has been measured by observing resonances in lightly-damped 2-junction interferometers. The capacitance was calculated using the resonance voltage, obtained by analyzing steps in the I-V characteristics, and the interferometer inductance, which was measured directly by the ...
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Josephson current distribution in two-dimensional Josephson tunnel junctions

Applied Physics Letters, 1984
A laser scanning technique has been used to obtain the Josephson current distributions in two-dimensional Josephson tunnel junctions. For zero external magnetic field, current distributions of cross-type junctions using symmetric and asymmetric feed configurations are found to be qualitatively different from the published theoretical results.
James R. Lhota, M. Scheuermann, P. K. Kuo, J. T. Chen   +3 more
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