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Crystal fields in RBa2Cu4O8 superconductors studied by inelastic neutron scattering

✍ Scribed by E.A. Goremychkin; B.D. Rainford; D.B. Currie; M.T. Weller; A.T. Boothroyd

Publisher
Elsevier Science
Year
1994
Tongue
English
Weight
156 KB
Volume
235-240
Category
Article
ISSN
0921-4534

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✦ Synopsis

Neutt~on spectroscopy has been used to study the crystal field excitation spectra in high quality samples of RBa2CII40 8 high temperature superconductors, with R = Dy, Ho and Er. The samples were prepared under high oxygen pressure. Analysis of the spectra included treatment of the spin-orbit and Coulomb interactions, and yielded crystal field parameters which showed a high degree of consistency from one rare earth to another.

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Crystal-field excitations and gap openin
Crystal-field excitations and gap opening in Tm: YBa2Cu4O8 by inelastic neutron scattering
✍ G. Amoretti; R. Caciuffo; P. Santini; O. Francescangeli; E.A. Goremychkin; R. Os πŸ“‚ Article πŸ“… 1994 πŸ› Elsevier Science 🌐 English βš– 756 KB

We have performed a neutron spectroscopy study of Tm doped YBa2Cu4Os using the direct geometry time-of-flight chopper spectrometer HET of the ISIS facility at the Rutherford Appleton Laboratory. Two samples were examined: a 10% doped sample with incident energy Ei = 25.2 meV and a 30% doped one with