ISSN:
1572-9605
Keywords:
Raman scattering
;
T′ structure
;
local distortion
;
phonon
Source:
Springer Online Journal Archives 1860-2000
Topics:
Electrical Engineering, Measurement and Control Technology
,
Physics
Notes:
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.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1007/BF00724587
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