Evidence for a soft-phonon-mode-driven Peierls-type distortion in Sc 3 CoC 4
Résumé
We provide experimental and theoretical evidence for the realization of the Peierls-type structurally distorted state in the quasi-one-dimensional superconductor Sc3CoC4 by a phonon-softening mechanism. The transition from the high-to the final low-temperature phase below 80 K proceeds via an extended intermediate temperature regime between 80 K and 150 K characterized by phonon-driven atom displacements. In support of the low-dimensional character of the title compound we find a highly anisotropic correlation-length of these dynamic distortions.
Domaines
Matière Condensée [cond-mat]| Origine | Fichiers produits par l'(les) auteur(s) |
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