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  • Springer  (5)
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  • 1
    Electronic Resource
    Electronic Resource
    Thermal expansion of two normal phases along a current carrying inhomogeneous superconducting wire (1996)
    Springer
    Journal of low temperature physics 102 (1996), S. 157-170 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present a theoretical model which describes the thermal expansion of one or two normal phases along a current-carrying type-I inhomogeneous superconducting wire. We derive explicit formulas for the longitudinal propagation velocity in the case of low regimes using a quasi-stationary approximation of the heat equation, as well as for the onset of thermal destruction of superconductivity. In the case of two normal phases propagating in opposite directions, the model predicts a yet unobserved thermal interaction at distances d of the order of the diameter of the wire. Depending on the local resistivity value and the distance d, the propagation velocity may change considerably. The predictions of the model are in good agreement with the available experimental data.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00755115
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  • 2
    Electronic Resource
    Electronic Resource
    Creation of the two-dimensional mixed state and its motion in a type I superconductor (1985)
    Springer
    Journal of low temperature physics 59 (1985), S. 423-468 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract An experimental study of the statics of the two-dimensional mixed state in hollow lead wires is presented. The results confirm the theoretical predictions of a model given in a previous paper and are similar to the measurements already reported on tin specimens. By introducing an axial current-carrying wire into the hole of the tin samples, it was possible to also investigate the motion of this state when it undergoes a displacement from the external surface to the interior. A theoretical model is proposed that agrees well with the experimental results and establishes the conditions required to reach the stationary situation.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00682443
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  • 3
    Electronic Resource
    Electronic Resource
    Statics of the two-dimensional mixed state in hollow, type I superconductors (1982)
    Springer
    Journal of low temperature physics 48 (1982), S. 39-59 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract A theoretical and experimental study of the statics of the two-dimensional mixed state in hollow, type I superconductors of pure tin has been made without considering thermal or other effects. In the experiments, this state could be moved into the interior of the sample by a magnetic field produced by a current flowing in a coaxial wire placed in the hole. This study shows that the current-voltage characteristics can present horizontal segments as well as discontinuities accompanying the appearance or disappearance of the superconducting, normal, or two-dimensional mixed state domains. Within the experimental error, the agreement between the calculated values and the experimental results is quite good.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00681717
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  • 4
    Electronic Resource
    Electronic Resource
    Current induced resistive state in cylindrical superconducting films. I. Critical currents measurements (1994)
    Springer
    Journal of low temperature physics 94 (1994), S. 605-617 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present measurements of critical currents and critical magnetic fields in cylindrical indium films. The most interesting result is that the ratio of the experimental critical current Ic1 to Silsbee's critical value Ic0 practically does not depend on temperature. This ratio was strongly dependent on the film thickness changing from Ic1 ≈ 0.18Ico for the film thickness d = 0.3μm to Ic1 ≈ 1.3Ico for d = 5.5μm. These results cannot be explained in the framework of the existing theoretical models.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753830
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  • 5
    Electronic Resource
    Electronic Resource
    Current induced resistive state in cylindrical superconducting films. II. Two-dimensional mixed state of type-1 superconductors (1994)
    Springer
    Journal of low temperature physics 94 (1994), S. 619-635 
    Details
    ISSN: 1573-7357
    Source: Springer Online Journal Archives 1860-2000
    Topics: Physics
    Notes: Abstract We present an experimental study of the current induced destruction of superconductivity in films of type-1 superconductors. The most interesting aspect of these experiments is the possibility to observe and investigate different mechanisms of the superconductivity destruction depending on the ratio of the sample thickness d to the coherence length ξ(T).If d/ξ(T) 〈 4.5 we observe, above a critical current value, a resistive state throughout the section of the film, but in the case of d/ξ(T) 〉 4.5 the destruction of superconductivity starts, as in bulk samples, with the formation of a normal shell along the outer surface of the cylindrical sample together with a layer of the two-dimensional mixed state at the inner surface. Investigations on films allowed for the first time to measure the thickness of the two-dimensional mixed state.
    Type of Medium: Electronic Resource
    URL: http://dx.doi.org/10.1007/BF00753831
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