论文标题
介质量表中的中间I型超导体
The intermediate type-I superconductors in the mesoscopic scale
论文作者
论文摘要
M. Tinkham和P. G. de Gennes在他们的书中描述了中间I型超导体的存在，这是由于外表面影响超导体对I型和II的众所周知的分类的结果。在这里，我们考虑了介观超导体，其中比率与面积很小，外表面的影响得到增强。通过标准的金茨堡 - 兰道理论，廷克汉姆·戴斯的场景扩展到了介观-I型超导体。我们在从真实的ITY类型I中找到过渡的新功能。后者具有两个不同的转变，即从降落场中的顺磁性到dimagnetic响应，并且随着临界耦合在上升场中接近临界耦合。此处提出的中间I相及其相应的跃迁反映了超导体的内在特征，而不是其几何特性。
M. Tinkham and P. G. de Gennes, described in their books the existence of an intermediate type-I superconductor as a consequence of an external surface that affects the well known classification of superconductors into type-I and II. Here we consider the mesoscopic superconductor where the ratio volume to area is small and the effects of the external surface are enhanced. By means of the standard Ginzburg-Landau theory the Tinkham-de Gennes scenario is extended to the mesoscopic type-I superconductor. We find new features of the transition at the passage from the genuine to the intermediate type-I. The latter has two distinct transitions, namely, from a paramagnetic to diamagnetic response in descending field and a quasi type-II behavior as the critical coupling is approached in ascending field. The intermediate type-I phase proposed here, and its corresponding transitions, reflect intrinsic features of the superconductor and not its geometrical properties.
