Physics – Condensed Matter – Superconductivity
Scientific paper
2011-10-07
Physics
Condensed Matter
Superconductivity
10 pages, 3 figures, in print with PRB
Scientific paper
We report a microscopic derivation of two-component Ginzburg-Landau (GL) field theory and the conditions of its validity in two-band superconductors. We also investigate the conditions when microscopically derived or phenomenological GL models fail and one should resort to a microscopic description. We show that besides being directly applicable at elevated temperatures, a version of a minimal two-component GL theory in certain cases also gives accurate description of certain aspects of a two-band system even substantially far from $T_c$. This shows that two-component GL model can be used for addressing a wide range of questions in multiband systems, in particular vortex physics and magnetic response. We also argue that single Ginzburg-Landau parameter cannot in general characterize magnetic response of multiband systems.
Babaev Egor
Silaev Mihail
No associations
LandOfFree
Microscopic derivation of two-component Ginzburg-Landau model and conditions of its applicability in two-band systems does not yet have a rating. At this time, there are no reviews or comments for this scientific paper.
If you have personal experience with Microscopic derivation of two-component Ginzburg-Landau model and conditions of its applicability in two-band systems, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Microscopic derivation of two-component Ginzburg-Landau model and conditions of its applicability in two-band systems will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-133558