Inelastic neutron scattering study of the lattice dynamics of LaCoO3

  • A. V. Rybina
  • V. V. Efimov
  • P. A. Alekseev
  • I. O. Troyanchuk
  • A. S. Ivanov
  • V. V. Sikolenko
  • E. S. Clementyev
Article

DOI: 10.1134/S1027451011120111

Cite this article as:
Rybina, A.V., Efimov, V.V., Alekseev, P.A. et al. J. Synch. Investig. (2011) 5: 1140. doi:10.1134/S1027451011120111

Abstract

The lattice dynamics of lanthanum cobaltite is investigated using the coherent inelastic neutron scattering technique in a temperature range from 10 to 536 K, in which two phase transitions are observed: a change in the Co spin state and a metal-insulator phase transition. The measurements were performed using an IN8 high flux thermal neutron triple-axis spectrometer (ILL, Grenoble). Temperature changes in the phonon dispersion curves caused by the rearrangement of the electron and spin subsystems are found.

Copyright information

© Pleiades Publishing, Ltd. 2011

Authors and Affiliations

  • A. V. Rybina
    • 1
  • V. V. Efimov
    • 2
  • P. A. Alekseev
    • 1
    • 3
  • I. O. Troyanchuk
    • 4
  • A. S. Ivanov
    • 5
  • V. V. Sikolenko
    • 6
  • E. S. Clementyev
    • 1
    • 3
    • 7
  1. 1.Russian Research Centre Kurchatov InstituteMoscowRussia
  2. 2.Joint Institute for Nuclear ResearchDubnaRussia
  3. 3.National Research Nuclear University Moscow Engineering Physics InstituteMoscowRussia
  4. 4.Joint Institute of Solid State Physics and SemiconductorsNational Academy of Sciences of BelarusMinskBelarus
  5. 5.Institut Laue-LangevinGrenoble Cedex 9France
  6. 6.German Research Centre for GeosciencePotsdamGermany
  7. 7.Institute for Nuclear ResearchRussian Academy of SciencesMoscowRussia

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