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

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

doi:10.1007/BF00724587

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 journal › Article › peer-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 language	English
Pages (from-to)	449-451
Number of pages	3
Journal	Journal of Superconductivity
Volume	7
Issue number	2
DOIs	https://doi.org/10.1007/BF00724587
Publication status	Published - Apr 1994
Externally published	Yes

Keywords

Raman scattering
T′ structure
local distortion
phonon

ASJC Scopus subject areas

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

Access to Document

10.1007/BF00724587

Cite this

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

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.",

keywords = "Raman scattering, T′ structure, local distortion, phonon",

author = "Masayuki Udagawa and Yoshinori Nagaoka and Norio Ogita and Miki Masada and Jun Akimitsu and Kohji Ohbayashi",

year = "1994",

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T1 - Phonon Raman scattering of R2CuO4 (R = Pr, Nd, Sm, and Gd)

AU - Udagawa, Masayuki

AU - Nagaoka, Yoshinori

AU - Ogita, Norio

AU - Masada, Miki

AU - Akimitsu, Jun

AU - Ohbayashi, Kohji

PY - 1994/4

Y1 - 1994/4

N2 - 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.

AB - 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.

KW - Raman scattering

KW - T′ structure

KW - local distortion

KW - phonon

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