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Couplage électrons-phonons reflétant une hétérogénéité dynamique dans des supraconducteurs en oxyde de cuivre.

Electron-phonon coupling reflecting dynamic charge inhomogeneity in copper oxide superconductors.

Auteurs : REZNIK D., PINTSCHOVIUS L., ITO M., et al.

Type d'article : Article

Résumé

The attempt to understand copper oxide superconductors is complicated by the presence of multiple strong interactions in these systems. Many believe that antiferromagnetism is important for superconductivity, but there has been renewed interest in the possible role of electron-lattice coupling. The conventional superconductor MgB2 has a very strong electron-lattice coupling, involving a particular vibrational mode (phonon) that was predicted by standard theory and confirmed quantitatively by experiment. In the article the authors present inelastic scattering measurements that show a similarly strong anomaly in the Cu-O bond-stretching phonon in the copper oxide superconductors.

Détails

  • Titre original : Electron-phonon coupling reflecting dynamic charge inhomogeneity in copper oxide superconductors.
  • Identifiant de la fiche : 2006-2785
  • Langues : Anglais
  • Source : Nature - vol. 440 - n. 7088
  • Date d'édition : 27/05/2006

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