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| 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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