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Title: Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3}

Abstract

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.

Authors:
 [1];  [2];  [3];  [1];  [2]; ;  [1];  [1];  [4];  [5]
  1. Leibniz Institute for Solid State and Materials Research IFW Dresden, Helmholtzstr. 20, 01069 Dresden (Germany)
  2. (Germany)
  3. Max-Planck-Institut fuer Metallforschung, Heisenberg Str. 3, 70569 Stuttgart (Germany)
  4. (France)
  5. Laboratoire de Physico-Chimie de l'Etat Solide, Universite de Paris-Sud, 91405 Orsay Cedex (France)
Publication Date:
OSTI Identifier:
20699660
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review Letters; Journal Volume: 95; Journal Issue: 23; Other Information: DOI: 10.1103/PhysRevLett.95.236401; (c) 2005 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
36 MATERIALS SCIENCE; DOPED MATERIALS; ELECTRON-PHONON COUPLING; FERROMAGNETIC MATERIALS; HOLES; LANTHANUM COMPOUNDS; MAGNETORESISTANCE; MANGANESE OXIDES; POLARIZATION; POLARONS; STRONTIUM COMPOUNDS; X-RAY DIFFRACTION

Citation Formats

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, and Revcolevschi, A. Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3}. United States: N. p., 2005. Web. doi:10.1103/PhysRevLett.95.236401.
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. Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3}. United States. doi:10.1103/PhysRevLett.95.236401.
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, and Revcolevschi, A. Fri . "Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3}". United States. doi:10.1103/PhysRevLett.95.236401.
@article{osti_20699660,
title = {Orbital Polaron Lattice Formation in Lightly Doped La{sub 1-x}Sr{sub x}MnO{sub 3}},
author = {Geck, J. and Max-Planck-Institut fuer Metallforschung, Heisenberg Str. 3, 70569 Stuttgart and Wochner, P. and Kiele, S. and Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestr. 85, 22603 Hamburg and Klingeler, R. and Buechner, B. and Reutler, P. and Laboratoire de Physico-Chimie de l'Etat Solide, Universite de Paris-Sud, 91405 Orsay Cedex and Revcolevschi, A.},
abstractNote = {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 = {10.1103/PhysRevLett.95.236401},
journal = {Physical Review Letters},
number = 23,
volume = 95,
place = {United States},
year = {Fri Dec 02 00:00:00 EST 2005},
month = {Fri Dec 02 00:00:00 EST 2005}
}