Superconductivity in Hole-Doped La1.8-xEu0.2CaxCuO4 with the Nd2CuO4-Type Structure

Tomohisa Takamatsu, Masatsune Kato, Takashi Noji, Yoji Koike

Research output: Contribution to journalConference articlepeer-review

10 Citations (Scopus)

Abstract

We have succeeded in synthesizing hole-doped bulk superconductors of La1.8-xEu0.2CaxCuO4 (x = 0.05 and 0.10) with the Nd2CuO4-type structure by means of the structural transformation at low temperatures from the K2NiF4-type structure via the Nd4Cu2O7-type structure. Superconductivity has appeared through the removal of excess oxygen by the reduction annealing in vacuum. Values of the superconducting transition temperature, Tc, are 13 and 6 K for x = 0.05 and 0.10, respectively. These values are smaller than those of T'-La1.8-xEu0.2SrxCuO4.

Original languageEnglish
Pages (from-to)46-49
Number of pages4
JournalPhysics Procedia
Volume58
DOIs
Publication statusPublished - 2014
Event26th International Symposium on Superconductivity, ISS 2013 - Tokyo, Japan
Duration: 2013 Nov 182013 Nov 20

Keywords

  • High-T superconductivity
  • Hole-doping
  • Reduction annealing
  • Solid-state reaction
  • The NdCuO-type structure

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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