PHONON RAMAN-SCATTERING OF R2CUO4 (R=PR, ND, SM, AND GD)

Authors
UDAGAWA M NAGAOKA Y OGITA N MASADA M AKIMITSU J OHBAYASHI K
Citation
M. Udagawa et al., PHONON RAMAN-SCATTERING OF R2CUO4 (R=PR, ND, SM, AND GD), Journal of superconductivity, 7(2), 1994, pp. 449-451
Citations number
8
Categorie Soggetti
Physics, Applied","Physics, Condensed Matter
Journal title
Journal of superconductivity → ACNP
ISSN journal
08961107
Volume
7
Issue
2
Year of publication
1994
Pages
449 - 451
Database
ISI
SICI code
0896-1107(1994)7:2<449:PROR(N>2.0.ZU;2-F
Abstract
For Gd2CuO4, a new symmetry-forbidden phonon for the tetragonal T' str ucture is observed. This implies that oxygen in the CuO2 plane is loca lly distorted along the CuO2 plane. Such distortion has never been obs erved for other T-type superconductors, which show superconductivity b y Ce doping. The disappearance of superconductivity for Gd can be corr elated with the appearance of the distortion due to oxygen in the CuO2 plane.