Issue |
Europhys. Lett.
Volume 34, Number 6, May III 1996
|
|
---|---|---|
Page(s) | 447 - 452 | |
Section | Condensed matter: electronic structure, electrical, magnetic and optical properties | |
DOI | https://doi.org/10.1209/epl/i1996-00477-3 | |
Published online | 01 September 2002 |
Tb spin correlations in Pb2Sr2Tb0.5Ca0.5Cu3O8
1
Laboratory for Neutron Scattering, ETH & PSI - CH-5232 Villigen PSI, Switzerland
2
Swiss Light Source Project, Paul Scherrer Institute - CH-5232 Villigen PSI, Switzerland
3
Chemistry Division, Argonne National Laboratory - Argonne, Il 60439, USA
4
Institut Laue Langevin - 156 X, F-38042 Grenoble Cedex, France
5
Rutherford Appelton Laboratory - Didcot, Oxon, UK
Received:
17
January
1996
Accepted:
26
March
1996
High-resolution neutron spectroscopy and neutron diffraction results on the magnetic properties of Tb in the high-Tc superconductor are presented. The lowest-lying crystalline-electric-field transition, expected at , is not observed, indicating that the system can still be described in the mean-field approximation at 20 K, well above TN (4 K). The inelastic neutron spectra can be decomposed into an elastic and a quasi-elastic part, indicating that a single Lorentzian does not describe well the magnetic-response function and/or that Tb 2D short-range correlations persist up to temperatures above 100 K.
PACS: 71.70.Ch – Crystal and ligand fields / 75.40.-s – Critical-point effects, specific heats, short-range order / 74.72.Jt – Other cuprates
© EDP Sciences, 1996
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