Discovery of superconductivity in Fe-pnictides and chalcogenides.
The interplay of magnetism and superconductivity is an old story with many twists. The latest of these is the discovery of superconductivity in Fe-pnictides and chalcogenides. This talk consists of a discussion of the physical properties of superconductors near magnetism, especially the Fe-based materials, but also ruthenates and some older materials. Suppression of magnetism in favour of spin-fluctuations, Fermi surface topology and magnetic reconstruction of the Fermi surface are emphasized.
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