On superconducting and magnetic properties of iron-oxypnictides

Abstract

Pairing symmetry in oxypnictides, a new family of multiband high-Tc superconductors, is partially imposed by the positions of multiple Fermi pockets, which itself can give rise to new order parameters, such as s+,- states or the state of dx^2-y^2 symmetry. Other pairing states may appear on small pockets for long range interactions, but they are expected to be sensitive to defects. We identify the competing antiferromagnetic order with the triplet exciton transition in the semi- metallic background and discuss whether its coexistence with superconductivity explains the doping dependence of Tc.

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References in corpus (2)

• Superconductivity at 25 K in hole doped $(L{a}_{1-x}S{r}_x)OFeAs$
• High Temperature Superconductivity in Transition Metal Oxypnictides: a Rare-Earth Puzzle?

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• Origin of Gap Anisotropy in Spin Fluctuation Models of the Fe-pnictides
• Superfluid density and penetration depth in Fe-pnictides
• Theory of itinerant magnetic excitations in the SDW phase of iron-based superconductors
• Effects of cobalt doping and three-dimensionality in $BaF{e}_{2}A{s}_2$
• The role of striction at magnetic and structural transitions in iron-pnictides
• Excitonic spin density wave state in iron pnictides
• Magnetic impurities in the two-band $s_{\pm }$-wave superconductors
• Angular resolved specific heat in iron-based superconductors: the case for nodeless extended $s$-wave gap
• Electronic structure of iron-based superconductors: from pnictides to chalcogenides and other similar systems
• Magnetic field-induced gapless state in multiband superconductors