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Title: Octahedral tilts and electronic correlations in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}

Abstract

We present a resonant x-ray scattering study of the octahedral tilt order between 50 K and 310 K in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}. At the La L{sub II}-edge, the resonant (300) reflection probes cooperative tilts of the MnO{sub 6} octahedra in this material, as verified by a model caclulation as well as a LDA+U study. The investigation of the octahedral tilts as a function of temperature and the comparison to the lattice parameters, the magnetization and the superlattice reflections related to charge and/or orbital order reveal an intimate coupling between electronic and tilt degrees of freedom in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}.

Authors:
 [1];  [2];  [3];  [1];  [2]; ;  [1];  [4]
  1. Leibniz Institute for Solid State and Materials Research IFW Dresden, Helmholtzstrasse 20, 01069 Dresden (Germany)
  2. (Germany)
  3. Max-Planck-Institut fuer Metallforschung, Heisenberg Strasse 3, 70569 Stuttgart (Germany)
  4. Laboratoire de Physico-Chimie de l'Etat Solide, Universite de Paris-Sud, 91405 Orsay Cedex (France)
Publication Date:
OSTI Identifier:
20976637
Resource Type:
Journal Article
Resource Relation:
Journal Name: Physical Review. B, Condensed Matter and Materials Physics; Journal Volume: 75; Journal Issue: 1; Other Information: DOI: 10.1103/PhysRevB.75.014405; (c) 2007 The American Physical Society; Country of input: International Atomic Energy Agency (IAEA)
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; COMPARATIVE EVALUATIONS; DEGREES OF FREEDOM; DENSITY FUNCTIONAL METHOD; ELECTRON CORRELATION; LANTHANUM COMPOUNDS; LATTICE PARAMETERS; MAGNETIZATION; REFLECTION; REFLECTIVITY; STRONTIUM COMPOUNDS; SUPERLATTICES; TEMPERATURE DEPENDENCE; X-RAY DIFFRACTION

Citation Formats

Geck, J., Max-Planck-Institut fuer Metallforschung, Heisenberg Strasse 3, 70569 Stuttgart, Wochner, P., Kiele, S., Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg, Reutler, P., Buechner, B., and Revcolevschi, A.. Octahedral tilts and electronic correlations in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}. United States: N. p., 2007. Web. doi:10.1103/PHYSREVB.75.014405.
Geck, J., Max-Planck-Institut fuer Metallforschung, Heisenberg Strasse 3, 70569 Stuttgart, Wochner, P., Kiele, S., Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg, Reutler, P., Buechner, B., & Revcolevschi, A.. Octahedral tilts and electronic correlations in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}. United States. doi:10.1103/PHYSREVB.75.014405.
Geck, J., Max-Planck-Institut fuer Metallforschung, Heisenberg Strasse 3, 70569 Stuttgart, Wochner, P., Kiele, S., Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg, Reutler, P., Buechner, B., and Revcolevschi, A.. Mon . "Octahedral tilts and electronic correlations in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}". United States. doi:10.1103/PHYSREVB.75.014405.
@article{osti_20976637,
title = {Octahedral tilts and electronic correlations in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}},
author = {Geck, J. and Max-Planck-Institut fuer Metallforschung, Heisenberg Strasse 3, 70569 Stuttgart and Wochner, P. and Kiele, S. and Hamburger Synchrotronstrahlungslabor HASYLAB at Deutsches Elektronen-Synchrotron DESY, Notkestrasse 85, 22603 Hamburg and Reutler, P. and Buechner, B. and Revcolevschi, A.},
abstractNote = {We present a resonant x-ray scattering study of the octahedral tilt order between 50 K and 310 K in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}. At the La L{sub II}-edge, the resonant (300) reflection probes cooperative tilts of the MnO{sub 6} octahedra in this material, as verified by a model caclulation as well as a LDA+U study. The investigation of the octahedral tilts as a function of temperature and the comparison to the lattice parameters, the magnetization and the superlattice reflections related to charge and/or orbital order reveal an intimate coupling between electronic and tilt degrees of freedom in La{sub 7/8}Sr{sub 1/8}MnO{sub 3}.},
doi = {10.1103/PHYSREVB.75.014405},
journal = {Physical Review. B, Condensed Matter and Materials Physics},
number = 1,
volume = 75,
place = {United States},
year = {Mon Jan 01 00:00:00 EST 2007},
month = {Mon Jan 01 00:00:00 EST 2007}
}
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  • We have studied the magneto-transport and magnetic properties of LSMO/YBCO/LSMO trilayers on LaAlO{sub 3} (001) substrate, deposited using pulsed laser deposition technique. From x-ray diffraction measurements, it is confirmed that the grown trilayer films are single phase natured. The temperature dependent resistivity shows a metallic behavior below 350 K. At low temperature from resistivity fitted data, we observe that electron-electron, electron-phonon, and electron-magnon interactions are the main factors for scattering of carriers. The ferromagnetic LSMO layers suppress the critical temperature of YBCO spacer layer. We observe maximum magnetoresistance value ∼49% at 250 K for LSMO(200 nm)/YBCO(50 nm)/LSMO(200 nm) trilayer. Magnetization measurements reveal that at roommore » temperature the YBCO spacer layer is allowing the LSMO layers to interact antiferromagnetically.« less
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