LATTICE-DYNAMICS OF THE LA2CUO4 CMCA ORTHORHOMBIC PHASE AT K=0

Authors
BAZHENOV AV REZCHIKOV CB SMIRNOVA IS
Citation
Av. Bazhenov et al., LATTICE-DYNAMICS OF THE LA2CUO4 CMCA ORTHORHOMBIC PHASE AT K=0, Physica. C, Superconductivity, 273(1-2), 1996, pp. 9-20
Citations number
26
Categorie Soggetti
Physics, Applied
Journal title
Physica. C, Superconductivity → ACNP
ISSN journal
09214534
Volume
273
Issue
1-2
Year of publication
1996
Pages
9 - 20
Database
ISI
SICI code
0921-4534(1996)273:1-2<9:LOTLCO>2.0.ZU;2-1
Abstract
Lattice dynamics has been employed in the approximation of the rigid-i on model for the orthorhombic Cmca phase of La2CuO4 single crystal at the Gamma-point of the Brillouin zone. Satisfactory agreement was achi eved between calculated and experimental frequencies and oscillator st rengths of dipole-active optical phonons, as well as at the Gamma-poin t frequencies of known modes active in Raman scattering.