Unconventional Superconductivity with a Sign Reversal in the Order Parameter of LaFeAsO 1-x F x
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TLDR
It is argued that the newly discovered superconductivity in a nearly magnetic, Fe-based layered compound is unconventional and mediated by antiferromagnetic spin fluctuations, though different from the usual superexchange and specific to this compound.Abstract:
We argue that the newly discovered superconductivity in a nearly magnetic, Fe-based layered compound is unconventional and mediated by antiferromagnetic spin fluctuations, though different from the usual superexchange and specific to this compound. This resulting state is an example of extended s-wave pairing with a sign reversal of the order parameter between different Fermi surface sheets. The main role of doping in this scenario is to lower the density of states and suppress the pair-breaking ferromagnetic fluctuations.read more
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Normal state resistivity of Ba1−xKxFe2As2: evidence for multiband strong-coupling behavior
Alexandre Avraamovitch Golubov,Oleg V. Dolgov,Alexander Boris,A. Charnukha,D. L. Sun,Chengtian Lin,A. F. Shevchun,Alexey V. Korobenko,M.R. Trunin,Vladimir N. Zverev +9 more
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Orbital-anisotropic electronic structure in the nonmagnetic state of BaFe 2 (As 1−x P x ) 2 superconductors
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