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An analysis is made of the effect of current fluctuations for an rf current-driven Josephson junction in the superconducting regime. The resistively shunted junction model and a transition rate theory between superconducting and dissipative states are used. A new approach is introduced which...
A simple interpolation method is proposed for the construction of a surprisingly accurate free energy of a type II superconductor, which uses only properties at the upper and lower critical fields. The validity of the approach is checked against exact numerical results. The interpolation formula...
The behavior of ferromagnetic superconductors (FS) with large GL parameter κ in a magnetic field is studied as a function of temperature. Both the exchange and the electromagnetic mechanisms of interaction between superconducting electrons and localized magnetic moments (LM) are taken into...
The single-particle excitation spectrum and the density of states (DOS) for a superconducting bilayer composite are calculated by solving the Bogoliubov equations. The bilayer consists of two different superconducting films in contact. The superconducting order parameters of the films Δ1 and Δ2...
The enhancement of the superconducting transition temperatureT
cof tin by 100%, of bismuth-thallium by 32%, and of bismuth-lead by 22% due to plastic deformation is reported. It is found that the transition to the superconducting state is sharp. The resistivity ρ and the critical fieldH
Recently it was discovered that helium in confined geometries remains a liquid at pressures considerably above bulk melting. By combining a special technique for measuring pressures in small pores with thermal measurements, the phase diagram has been obtained for freezing and melting of4He in...
Low-field magnetic screening and breakdown fields have been measured in thick proximity-induced superconducting copper by means of dc magnetization and ac susceptibility in the temperature range 10 to 0.005 K. From the thickness and temperature dependence of the breakdown field the Cooper pair...
An attempt is made to find the density instability to a superconducting multigap state by using the kinetic equations. This approach is general enough to include both the possibility of anomalous diffusion and the purely kinetic instability proposed by Iguchi and Konno. No instability to small...
The thermal resistance between liquid3He and copper potassium tutton salt (CPS) has been measured through its magnetic ordering temperature (T
c=29.6 mK). The thermal resistanceR for pure3He has a broad minimum near 60 mK and increases continuously throughT
cwith decreasing temperature, except...
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