Physics – Condensed Matter – Superconductivity
Scientific paper
2009-12-18
Supercond. Sci. Technol. 23, 054011 (2010)
Physics
Condensed Matter
Superconductivity
7 pages, 5 figures
Scientific paper
10.1088/0953-2048/23/5/054011
We consider the interplay between superconducting (SC) and commensurate spin-density-wave (SDW) orders in iron-pnictides by analyzing a multiple order Ginzburg-Landau free energy. We are particularly interested in whether the doping-induced transition between the two states is first order, or the two pure phases are separated by an intermediate phase with coexisting SC and SDW orders. For perfect nesting, the two orders do not coexist, because SDW order, which comes first, gaps the full Fermi surface leaving no space for SC to develop. When nesting is not perfect due to either ellipticity of electron bands or doping-induced difference in chemical potentials for holes and electrons, SDW order still leaves modified Fermi surfaces for not too strong SDW magnetism and the SC order may develop. We show that the two orders coexist only when certain relations between ellipticity and doping are met. In particular, in a compensated metal, ellipticity alone is not sufficient for coexistence of the two orders.
Chubukov Andrey V.
Vavilov Maxim G.
Vorontsov Anton B.
No associations
LandOfFree
Coexistence between superconducting and spin density wave states in iron-based superconductors: Ginzburg-Landau analysis 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 Coexistence between superconducting and spin density wave states in iron-based superconductors: Ginzburg-Landau analysis, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Coexistence between superconducting and spin density wave states in iron-based superconductors: Ginzburg-Landau analysis will most certainly appreciate the feedback.
Profile ID: LFWR-SCP-O-348933