Isotope effect on the optical phonons of YBa₂Cu₄O₈ studied by far-infrared ellipsometry and Raman scattering
- Trajnerowicz, A. Institute of Experimental Physics, Warsaw University, Poland - Max-Planck Institut für Festkörperforschung, Stuttgart, Germany
- Golnik, A. Institute of Experimental Physics, Warsaw University, Poland - Max-Planck Institut für Festkörperforschung, Stuttgart, Germany
- Bernhard, Christian Max-Planck Institut für Festkörperforschung, Stuttgart, Germany - Department of Physics, University of Fribourg, Switzerland
- Machtoub, L. Max-Planck Institut für Festkörperforschung, Stuttgart, Germany
- Ulrich, C. Max-Planck Institut für Festkörperforschung, Stuttgart, Germany
- Tallon, J. L. New Zealand Institute for Industrial Research, Lower Hutt, New Zealand
- Cardona, M. Max-Planck Institut für Festkörperforschung, Stuttgart, Germany
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28.09.2006
Published in:
- Physical Review B. - 2006, vol. 74, p. 104513
English
The phonon spectra of YBa₂Cu₄O₈ polycrystalline samples with different isotope substitution for Ba, Cu, and O have been studied using far-infrared ellipsometry and Raman scattering. The observed isotope shifts of Raman- and infrared-active phonons provide insight into their relative Ba, Cu, and O normal mode content. This allows us to examine mode eigenvectors obtained from lattice dynamical calculations using ab initio electronic structures based on the full potential linear muffin-tin-orbital within the local density approximation. Our Raman results demonstrate that the 104 cm⁻¹ Ag
- Faculty
- Faculté des sciences et de médecine
- Department
- Département de Physique
- Language
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- English
- Classification
- Physics
- License
- License undefined
- Identifiers
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- RERO DOC 6154
- DOI 10.1103/PhysRevB.74.104513
- Persistent URL
- https://folia.unifr.ch/unifr/documents/300147
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