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首页> 外文期刊>Physica, C. Superconductivity and its applications >Expulsion of magnetic flux in a type-I superconducting strip
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Expulsion of magnetic flux in a type-I superconducting strip

机译:I型超导带中的磁通量的排出

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摘要

Flux expulsion in a type-I superconducting strip, induced by decrease of a perpendicular magnetic field following field increase-induced flux penetration, is observed by real time detection of the flux-induced voltage pulses. Three different expulsion regimes are identified, corresponding in general to the three initial regimes of flux penetration. The crossover field between two expulsion regimes is found to be associated with the change of nucleation mechanism at H-c2. Possible association of the expulsion onset with surface superconductivity and H-c3 is discussed. The results support the idea of existence of an energy barrier against flux expulsion. (C) 2001 Elsevier Science B.V. All rights reserved. [References: 32]
机译:通过实时检测磁通量引起的电压脉冲,可以观察到由于磁场增加引起的磁通量穿透后垂直磁场的减小而导致的I型超导带中的磁通量排出。确定了三种不同的驱逐状态,通常与通量渗透的三个初始状态相对应。发现两个驱逐状态之间的交叉场与H-c2处成核机理的变化有关。讨论了驱逐起点与表面超导性和H-c3的可能联系。该结果支持存在一种针对通量排出的能量屏障的想法。 (C)2001 Elsevier Science B.V.保留所有权利。 [参考:32]

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