Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3}
By resonant x-ray scattering at the Mn K edge on La{sub 7/8}Sr{sub 1/8}MnO{sub 3}, we show that an orbital polaron lattice (OPL) develops at the metal-insulator transition of this compound. This orbital reordering explains consistently the unexpected coexistence of ferromagnetic and insulating prope...
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| Veröffentlicht in: | Physical review letters 2005-12, Vol.95 (23) |
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| creator | Geck, J. Max-Planck-Institut fuer Metallforschung, Heisenberg Str. 3, 70569 Stuttgart Wochner, P. Kiele, S. Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg Klingeler, R. Buechner, B. Reutler, P. Laboratoire de Physico-Chimie de l'Etat Solide, Universite de Paris-Sud, 91405 Orsay Cedex Revcolevschi, A. |
| description | By resonant x-ray scattering at the Mn K edge on La{sub 7/8}Sr{sub 1/8}MnO{sub 3}, we show that an orbital polaron lattice (OPL) develops at the metal-insulator transition of this compound. This orbital reordering explains consistently the unexpected coexistence of ferromagnetic and insulating properties at low temperatures, the quadrupling of the lattice structure parallel to the MnO{sub 2} planes, and the observed polarization and azimuthal dependencies. The OPL is a clear manifestation of strong orbital-hole interactions, which play a crucial role for the colossal magnetoresistance effect and the doped manganites in general. |
| doi_str_mv | 10.1103/PhysRevLett.95.236401 |
| format | Article |
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This orbital reordering explains consistently the unexpected coexistence of ferromagnetic and insulating properties at low temperatures, the quadrupling of the lattice structure parallel to the MnO{sub 2} planes, and the observed polarization and azimuthal dependencies. 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This orbital reordering explains consistently the unexpected coexistence of ferromagnetic and insulating properties at low temperatures, the quadrupling of the lattice structure parallel to the MnO{sub 2} planes, and the observed polarization and azimuthal dependencies. The OPL is a clear manifestation of strong orbital-hole interactions, which play a crucial role for the colossal magnetoresistance effect and the doped manganites in general.</abstract><cop>United States</cop><doi>10.1103/PhysRevLett.95.236401</doi></addata></record> |
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| source | American Physical Society Journals |
| subjects | DOPED MATERIALS ELECTRON-PHONON COUPLING FERROMAGNETIC MATERIALS HOLES LANTHANUM COMPOUNDS MAGNETORESISTANCE MANGANESE OXIDES MATERIALS SCIENCE POLARIZATION POLARONS STRONTIUM COMPOUNDS X-RAY DIFFRACTION |
| title | Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3} |
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