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          Institute: MPI für Chemische Physik fester Stoffe     Collection: publications 2002     Display Documents



ID: 17436.0, MPI für Chemische Physik fester Stoffe / publications 2002
Microscopic State of Low Doped Manganites La1-xSrxMnO3 Probed by ESR
Authors:Ivanshin, V. A.; Eremin, M. V.; Deisenhofer, J.; von Nidda, H. A. K.; Loidl, A.; Eremina, R. M.
Language:English
Date of Publication (YYYY-MM-DD):2002-12
Title of Journal:Journal of Superconductivity
Journal Abbrev.:J. Supercond.
Volume:15
Issue / Number:6
Start Page:523
End Page:525
Review Status:Peer-review
Audience:Not Specified
Abstract / Description:The electron spin resonance (ESR) measurements were performed in single crystals of La1-xSrxMnO3 (0.05 less than or equal to x less than or equal to 0.125) in order to study the interplay of crystal field, Dzyaloshinsky-Moriya interaction, Jahn-Teller (JT) effect, and orbital order. The angular dependence of the ESR linewidth of an untwinned La0.95Sr0.05MnO3 single crystal has been analyzed in the high-temperature approximation, which takes into account the microscopic geometry of the four nonequivalent Mn positions in the orthorhombic unit cell. A strong mixing of the \3z(2) - r(2)) and \x(2) - y(2)) states for the real orbital configuration was found. Magnetic inhomogeneities observed in the ESR spectra across the composition range 0.075 less than or equal to x less than or equal to 0.125 can be attributed to the presence of ferromagnetic clusters (magnetic spin polarons) in the paramagnetic state. New polaronic models are proposed.
Free Keywords:ESR; manganites; spin-orbit coupling; polarons
Comment of the Author/Creator:Date: 2002, DEC
External Publication Status:published
Document Type:Article
Communicated by:Ina Wanschura
Affiliations:MPI für chemische Physik fester Stoffe
External Affiliations:Kazan VI Lenin State Univ, MRS Lab, Kazan 420008, Russia; Kazan VI Lenin State Univ, MRS Lab, Kazan 420008, Russia; Max Planck Inst Chem Phys Fester Stoffe, D-01187 Dresden, Germany; Inst Phys, EKM, D-86135 Augsburg, Germany; EK Zavoisky Phys Tech Inst, Kazan 420029, Russia
Identifiers:ISI:000179495900005 [ID No:1]
ISSN:0896-1107 [ID No:2]
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