Interplay of superconductivity and fermi-liquid transport in rh-Doped CaFe2As2 with lattice-collapse transition

Masataka Danura, Kazutaka Kudo, Yoshihiro Oshiro, Shingo Araki, Tatsuo C. Kobayashi, Minoru Nohara

Research output: Contribution to journalArticle

32 Citations (Scopus)

Abstract

Ca(Fe1-xRhx)2As2 undergoes successive phase transitions with increasing Rh doping in the T = 0 limit. The antiferromagnetic-metal phase with orthorhombic structure at 0:00 ≤ x ≤ 0:020 is driven to a superconducting phase with uncollapsed-tetragonal (ucT) structure at 0:020 ≤ x ≤ 0:024; a non-superconducting collapsed-tetragonal (cT) phase takes over at x ≥ 0:024. The breakdown of Fermi-liquid transport is observed in the ucT phase above Tc. In the adjacent cT phase, Fermi-liquid transport is restored along with a disappearance of superconductivity. This interplay of superconductivity and Fermi-liquid transport suggests the essential role of magnetic fluctuations in the emergence of superconductivity in doped CaFe2As2.

Original languageEnglish
Article number103701
Journaljournal of the physical society of japan
Volume80
Issue number10
DOIs
Publication statusPublished - Oct 1 2011

Keywords

  • Fermi-liquid transport
  • Iron-based superconductors
  • Lattice collapse transition

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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