کد مقاله کد نشریه سال انتشار مقاله انگلیسی نسخه تمام متن
1818787 1026036 2010 5 صفحه PDF دانلود رایگان
عنوان انگلیسی مقاله ISI
Type-1.5 superconductivity in two-band systems
موضوعات مرتبط
مهندسی و علوم پایه فیزیک و نجوم فیزیک ماده چگال
پیش نمایش صفحه اول مقاله
Type-1.5 superconductivity in two-band systems
چکیده انگلیسی

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]).

ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Physica C: Superconductivity - Volume 470, Issue 19, 1 October 2010, Pages 717–721
نویسندگان
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