Phonon Raman scattering of R2CuO4 (R = Pr, Nd, Sm, and Gd)

Masayuki Udagawa, Yoshinori Nagaoka, Norio Ogita, Miki Masada, Jun Akimitsu, Kohji Ohbayashi

Research output: Contribution to journalArticlepeer-review

Abstract

For Gd2CuO4, a new symmetry-forbidden phonon for the tetragonal T′ structure is observed. This implies that oxygen in the CuO2 plane is locally distorted along the CuO2 plane. Such distortion has never been observed for other T′-type superconductors, which show superconductivity by Ce doping. The disappearance of superconductivity for Gd can be correlated with the appearance of the distortion due to oxygen in the CuO2 plane.

Original languageEnglish
Pages (from-to)449-451
Number of pages3
JournalJournal of Superconductivity
Volume7
Issue number2
DOIs
Publication statusPublished - Apr 1994
Externally publishedYes

Keywords

  • Raman scattering
  • T′ structure
  • local distortion
  • phonon

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics
  • Physics and Astronomy (miscellaneous)

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