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          Institute: MPI für Festkörperforschung     Collection: FKF Publikationen 2006     Display Documents



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ID: 306012.0, MPI für Festkörperforschung / FKF Publikationen 2006
Raman scattering in the Mott insulators LaTiO3 and YTiO3: Evidence for orbital excitations
Authors:Ulrich, C.; Gössling, A.; Grüninger, M.; Guennou, M.; Roth, H.; Cwik, M.; Lorenz, T.; Khaliullin, G.; Keimer, B.
Language:English
Date of Publication (YYYY-MM-DD):2006
Title of Journal:Physical Review Letters
Volume:97
Issue / Number:15
Sequence Number of Article:157401
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:Raman scattering is used to observe pronounced electronic excitations
around 230 meV-well above the two-phonon range-in the Mott insulators
LaTiO3 and YTiO3. Based on the temperature, polarization, and photon
energy dependence, the modes are identified as orbital excitations. The
observed profiles bear a striking resemblance to magnetic Raman modes
in the insulating parent compounds of the superconducting cuprates,
indicating an unanticipated universality of the electronic excitations
in transition metal oxides.
External Publication Status:published
Document Type:Article
Communicated by:N. N.
Affiliations:MPI für Festkörperforschung
External Affiliations:Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany.
; Univ Cologne, Inst Phys 2, D-50937 Cologne, Germany.
Identifiers:ISI:000241247700056 [ID No:1]
ISSN:0031-9007 [ID No:2]
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