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Neutron spectroscopic studies of crystalline electric fields in disordered high-Tc ErBa2Cu3OX

✍ Scribed by A. Podlesnyak; V. Kozhevnikov; A. Mirmelstein; P. Allenspach; J. Mesot; U. Staub; A. Furrer

Publisher
Elsevier Science
Year
1991
Tongue
English
Weight
148 KB
Volume
185-189
Category
Article
ISSN
0921-4534

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✦ Synopsis

The crystalline electric field (CEF) splitting of the Er 3Γ· 4f-shell in the high-T c superconductor ErBa2Cu307 doped with Zn and Ni as well as disordered by fast neutron irradiation has been studied by the inelastic neutron scattering technique. The results are used to derive information on the effective charge associated with the superconducting CuO 2 planes and support the idea of magnetic fluctuations to be the mechanism leading to the formation of a superconducting s*~te.

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The crystal structure and the crystalline-electric-field splitting of the Er 3+ 4f-shell in the high-Tc superconductor ErBa2Cug0, (x=6.95, 6.18) disordered with fast neutron irradiation has been investigated by elastic and inelastic neutron scattering techniques, respectively. The results yield evid

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Neutron spectroscopy has been employed to observe the crystal field in tt~ high-TΒ© ~teonductor ErBaleu3Ox (6<x<7) as a direct probe of the local charge distribution around ~ Er site. Our results confirm in a very direct way the charge transfer reeds! which so far ~s been established by considering b