OPTICAL PHONONS IN THE ORTHORHOMBIC DOUBLE-CHAIN SR1-XCAXCUO2 (X=0, 0.5)

Authors
ABRASHEV MV LITVINCHUK AP THOMSEN C POPOV VN
Citation
Mv. Abrashev et al., OPTICAL PHONONS IN THE ORTHORHOMBIC DOUBLE-CHAIN SR1-XCAXCUO2 (X=0, 0.5), Physical review. B, Condensed matter, 55(14), 1997, pp. 9136-9141
Citations number
31
Categorie Soggetti
Physics, Condensed Matter
Journal title
Physical review. B, Condensed matter → ACNP
ISSN journal
01631829
Volume
55
Issue
14
Year of publication
1997
Pages
9136 - 9141
Database
ISI
SICI code
0163-1829(1997)55:14<9136:OPITOD>2.0.ZU;2-P
Abstract
We report micro-Raman and far-infrared reflectivity spectra obtained f rom the two members SrCuO2 and Sr0.5Ca0.5CuO2 of the solid solution Sr 1-xCaxCuO2 with orthorhombic chain structure. The analysis of the spec tra is based on the similarity between the investigated stucture and r elated copper oxides. which contain the same type of copper-oxygen cha ins. The assignment of the observed lines to atomic vibrations is supp orted by shell model lattice-dynamics calculations.