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Mesoscopic superconductors as 'artificial atoms' made from Cooper pairs

机译：介观超导体是由库珀对制成的“人造原子”

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The superconducting coherence length xi = (h) over bar v(F)/Delta characterizes the spatial extent of Cooper pairs and, in practice, can be as large as several microns. If such quasi-particles are squeezed in a small volume, their wavefunctions become strongly modified and, therefore, mesoscopic superconductors can be expected to exhibit properties radically different from a bulk material. We have studied the influence of quantum confinement on the superconductivity of individual grains with size down to 100 nm and observed plenty of exotic features in their behavior that changes very rapidly upon changing their size. In this paper, we focus on those features which relate to the presence of discrete quantum states of the Bose condensate and emphasize extended similarities between the physics of mesoscopic superconductors and 'artificial atoms'. (C) 1998 Elsevier Science B.V. All rights reserved. [References: 13]
机译：条v（F）/ Delta上的超导相干长度xi =（h）表征了库珀对的空间范围，并且在实践中可以高达几微米。如果将这种准颗粒压缩到很小的体积，它们的波函数将被强烈改变，因此，介观超导体有望表现出与块状材料根本不同的性能。我们研究了量子限制对尺寸低至100 nm的单个晶粒的超导性的影响，并观察到了许多行为上的奇异特征，这些奇异特征会随着尺寸的变化而迅速变化。在本文中，我们重点关注与玻色凝析液的离散量子态存在有关的那些特征，并强调介观超导体和“人造原子”的物理之间的扩展相似性。 （C）1998 Elsevier Science B.V.保留所有权利。 [参考：13]

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