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Statut |
Confirmé |
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Série |
SEM-BESSON |
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Domaines |
cond-mat |
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Date |
Lundi 11 Mai 2009 |
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Heure |
10:30 |
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Institut |
IMPMC |
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Salle |
Salle de Conférence, Bâtiment 15,140 rue de Lourmel, 75015 Paris |
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Nom de l'orateur |
Mazin |
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Prenom de l'orateur |
Igor |
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Addresse email de l'orateur |
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Institution de l'orateur |
Naval Research Laboratories |
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Titre |
Electronic structure, superconductivity and magnetism in ferropnictides |
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Résumé |
There is growing evidence that the newly discovered high-Tc superconductivity in ferropnictides is intimately related to their unique magnetic properties. In the first part of the talk I will discuss
the electronic structure of ferropnictides as it emerges from the density functional calculations, and will show that this electronic structure strongly favors a new unconventional superconducting state
with an s-wave angular dependence of the gap, but with a sigh-changing order parameter. I will also discuss experimental evidence for and against this state, as well as potential experiments that can provide decisive evidence to this effect. In the second part of the talk I will argue for strong incipient antiferromagnetism in both parent and superconducting ferropnictides and discuss several hypotheses about why this strong magnetism has not been observed, or observed at a much weaker level, in the available experiments. |
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Numéro de preprint arXiv |
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Commentaires |
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Fichiers attachés |
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