Počet záznamů: 1
Evolution of the phonon density of states of LaCoO.sub.3./sub. over the spin state transition
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SYSNO ASEP 0364248 Druh ASEP J - Článek v odborném periodiku Zařazení RIV J - Článek v odborném periodiku Poddruh J Článek ve WOS Název Evolution of the phonon density of states of LaCoO3 over the spin state transition Tvůrce(i) 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)Zdroj.dok. Physical Review. B - ISSN 1098-0121
Roč. 83, č. 21 (2011), "214305-1"-"214305-6"Poč.str. 6 s. Jazyk dok. eng - angličtina Země vyd. US - Spojené státy americké Klíč. slova first-principles theory ; spin crossover Vědní obor RIV BM - Fyzika pevných látek a magnetismus CEZ AV0Z10100521 - FZU-D (2005-2011) UT WOS 000292252300004 DOI 10.1103/PhysRevB.83.214305 Anotace 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. Pracoviště Fyzikální ústav Kontakt Kristina Potocká, potocka@fzu.cz, Tel.: 220 318 579 Rok sběru 2012
Počet záznamů: 1