INFLUENCE OF THE ORTHORHOMBIC DISTORTION ON THE LATTICE-VIBRATIONS INLA2CUO4

Authors
CHAPLOT SL REICHARDT W PINTSCHOVIUS L
Citation
Sl. Chaplot et al., INFLUENCE OF THE ORTHORHOMBIC DISTORTION ON THE LATTICE-VIBRATIONS INLA2CUO4, Physica. B, Condensed matter, 220, 1996, pp. 219-221
Citations number
5
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physica. B, Condensed matter → ACNP
ISSN journal
09214526
Volume
220
Year of publication
1996
Pages
219 - 221
Database
ISI
SICI code
0921-4526(1996)220:<219:IOTODO>2.0.ZU;2-J
Abstract
When La2CuO4 (or (La,Sr)(2)CuO4) is cooled below the orthorhombic-to-t etragonal phase transition temperature, numerous changes of the phonon response have been observed in neutron as well as in optical spectra. A recently developed transferable potential model applied to the low- T and high-T phases of La2CuO4 successfully explains many of the chang es observed at T-s at least qualitatively, if not quantitatively.