کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
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1818787 | 1026036 | 2010 | 5 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Type-1.5 superconductivity in two-band systems Type-1.5 superconductivity in two-band systems](/preview/png/1818787.png)
In the usual Ginzburg–Landau theory the critical value of Ginzburg–Landau parameter κc=1/2 separates regimes of type-I and type-II superconductivity. The latter regime possess thermodynamically stable vortex excitations which interact with each other repulsively and tend to form vortex lattices. It was shown in [5] that this dichotomy in broken in U(1) × U(1) Ginzburg–Landau models which possess a distinct phase with vortex excitations which interact attractively at large length scales and repulsively at shorter distances. Here we discuss the influence of the Josephson coupling and that similar kind of superconductivity can also arise for entirely different reasons in superconductors where only one band is superconducting if this band interacting via a proximity effect with another band (the report is partially based on [1]).
Journal: Physica C: Superconductivity - Volume 470, Issue 19, 1 October 2010, Pages 717–721