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



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ID: 7299.0, MPI für Festkörperforschung / FKF Publikationen 2002
Orbital-lattice polarons in ferromagnetic LaMnO3
Authors:Bała, J.; Oleś, A. M.; Sawatzky, G. A.
Language:English
Date of Publication (YYYY-MM-DD):2002
Title of Journal:Physical Review B
Volume:65
Issue / Number:18
Sequence Number of Article:184414
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:We investigate the combined influence of superexchange and
electron-phonon interactions on the excitation spectra and on
hole propagation in a ferromagnetic plane of LaMnO3. The Jahn-
Teller effect modifies the energies of both orbital and phonon
excitations and can lead to modes with mixed character, and for
strong Jahn-Teller interaction even to a structural instability
due to profound softening of one of the phonon modes. Solving
the problem of hole propagation in the self-consistent Born
approximation, we found that the quasiparticle states at the
bottom of the spectrum are accompanied by broad structures,
representing vibrational side bands which result from the hole-
lattice coupling.
External Publication Status:published
Document Type:Article
Communicated by:Michaela Asen-Palmer
Affiliations:MPI für Festkörperforschung
External Affiliations:; Jagiellonian Univ, Marian Smoluchowski Inst Phys, Reymonta 4, PL-30059 Krakow, Poland
; Max Planck Inst Festkorperforsch, D-70569 Stuttgart, Germany
; Univ Groningen, Ctr Mat Sci, Lab Appl & Solid State Phys, NL-9747 AG Groningen, Netherlands
; Univ British Columbia, Dept Phys & Astron, Vancouver, BC 6VT 1Z1, Canada
Identifiers:ISI:000175758700066
ISSN:0163-1829
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