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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2002     Display Documents



  history
ID: 7433.0, MPI für Festkörperforschung / FKF Publikationen 2002
In-plane polarized collective modes in detwinned YBa2Cu3O6.95 observed by spectral ellipsometry
Authors:Bernhard, C.; Holden, T.; Humlíček, J.; Munzar, D.; Golnik, A.; Kläser, M.; Wolf, T.; Carr, L.; Homes, C.; Keimer, B.; Cardona, M.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Solid State Communications
Volume:121
Issue / Number:2-3
Start Page:93
End Page:97
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The in-plane dielectric response of detwinned YBa2Cu3O6.95 has
been studied by far-infared ellipsometry. A surprisingly large
number of in-plane polarized modes are observed. Some of them
correspond to pure phonon modes. Others possess a large
electronic contribution which strongly increases in the
superconducting state. The free carrier response and the
collective modes exhibit a Pronounced a-b anisotropy. We
discuss our results in terms of a charge density wave state in
the 1-D CuO chains and induced charge density fluctuations
within the 2-D CuO2 planes. (C) 2002 Elsevier Science Ltd. All
rights reserved.
Free Keywords:high-T-c superconductors; dielectric response; electron-phonon
interactions; light absorption and reflection
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Max Planck Inst Festkorperforsch, Heisenbergstr 1, D-70569 Stuttgart, Germany
; Masaryk Univ, Inst Condensed Matter Phys, CZ-61137 Brno, Czech Republic
; Warsaw Univ, Inst Expt Phys, PL-00681 Warsaw, Poland
; Forschungszentrum Karlsruhe, ITP, D-76021 Karlsruhe, Germany
; Brookhaven Natl Lab, Natl Synchrotron Light Source, Upton, NY 11973 USA
Identifiers:ISI:000173266700007
ISSN:0038-1098
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