Theory of isotope effects in Raman spectra of YBa2Cu3O7

Citation
H. Auer et al., Theory of isotope effects in Raman spectra of YBa2Cu3O7, PHYSICA C, 341, 2000, pp. 2247-2248
Citations number
4
Categorie Soggetti
Apllied Physucs/Condensed Matter/Materiales Science
Journal title
PHYSICA C
ISSN journal
09214534 → ACNP
Volume
341
Year of publication
2000
Part
4
Pages
2247 - 2248
Database
ISI
SICI code
0921-4534(200011)341:<2247:TOIEIR>2.0.ZU;2-Z
Abstract
We investigate the effect of site-selective isotope substitution on the Ram an spectra of the yttrium-barium cuprate by means of first-principles bands tructure calculations. Upon oxygen isotope substitution we find a dramatic change in the Raman scattering intensities which is much more pronounced th an the shift of the phonon frequencies. This effect is due to large changes in the eigenvectors caused by the site-selective substitution.