Evidence for a soft phonon mode driven Peierls-type distortion in Sc3CoC4

Jan Langmann, Christof Haas, Emmanuel Wenger, Dominik Schaniel, Wolfgang Scherer, and Georg Eickerling
Phys. Rev. B 102, 094109 – Published 25 September 2020
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Abstract

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 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.

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  • Received 4 March 2020
  • Revised 8 September 2020
  • Accepted 9 September 2020

DOI:https://doi.org/10.1103/PhysRevB.102.094109

©2020 American Physical Society

Physics Subject Headings (PhySH)

Condensed Matter, Materials & Applied Physics

Authors & Affiliations

Jan Langmann1, Christof Haas1, Emmanuel Wenger2, Dominik Schaniel2, Wolfgang Scherer1, and Georg Eickerling1,*

  • 1University of Augsburg, Institut für Physik, Universität Augsburg, Universitätsstraße 1, D-86159 Augsburg, Germany
  • 2Université de Lorraine, CNRS, CRM2, F-54000 Nancy, France

  • *georg.eickerling@physik.uni-augsburg.de

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Issue

Vol. 102, Iss. 9 — 1 September 2020

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