Number of the records: 1
Evolution of the phonon density of states of LaCoO.sub.3./sub. over the spin state transition
- 1.
SYSNO ASEP 0364248 Document Type J - Journal Article R&D Document Type Journal Article Subsidiary J Článek ve WOS Title Evolution of the phonon density of states of LaCoO3 over the spin state transition Author(s) Golosova, N.O. (RU)
Kozlenko, D. P. (RU)
Kolesnikov, A.I. (US)
Kazimirov, V.Y. (RU)
Smirnov, M. B. (RU)
Jirák, Zdeněk (FZU-D) RID, ORCID, SAI
Savenko, B. N. (RU)Source Title Physical Review. B - ISSN 1098-0121
Roč. 83, č. 21 (2011), "214305-1"-"214305-6"Number of pages 6 s. Language eng - English Country US - United States Keywords first-principles theory ; spin crossover Subject RIV BM - Solid Matter Physics ; Magnetism CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000292252300004 DOI 10.1103/PhysRevB.83.214305 Annotation The phonon spectra of LaCoO3 were studied by inelastic neutron scattering in the temperature range of 4–120 K. The DFT calculations of the lattice dynamics have been made for interpretation of the experimental data. The observed and calculated phonon frequencies were found to be in a reasonable agreement. The evolution of the phonon density of states over the spin state transition was analyzed. In the low-temperature range (T < 50 K), an increase in the energy of resolved breathing, stretching, and bending phonon modes was found, followed by their softening and broadening at higher temperatures due to the spin state transition and relevant orbital-phonon coupling. Workplace Institute of Physics Contact Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Year of Publishing 2012
Number of the records: 1