Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions

• Date: 2006
• Main Authors: Gnezdilov, V., Choi, K.-Y., Pashkevich, Yu., Lemmens, P., Shiryaev, S., Bychkov, G., Barilo, S., Fomin, V., Yeremenko, A.V.
• Format: Article
• Language: English
• Published: Фізико-технічний інститут низьких температур ім. Б.І. Вєркіна НАН України 2006
• Series: Физика низких температур
• Subjects: Динамика кристаллической решетки
• Online Access: https://nasplib.isofts.kiev.ua/handle/123456789/120131
• Journal Title: Digital Library of Periodicals of National Academy of Sciences of Ukraine
• Cite this: Low temperature mixed spin state of Co³⁺ in LaCoO₃ evidenced from Jahn–Teller lattice distortions / V. Gnezdilov, K.-Y. Choi, Yu. Pashkevich, P. Lemmens, S. Shiryaev, G. Bychkov, S. Barilo, V. Fomin, A.V. Yaremenko // Физика низких температур. — 2006. — Т. 32, № 2. — С. 219-226. — Бібліогр.: 38 назв. — англ.

One- and multi-phonon excitations of the single crystalline LaCoO₃ were studied using Raman spectroscopy in the temperature region of 5–300 K. First-order Raman spectra show a larger number of phonon modes than allowed for the rhombohedral structure. Additional phonon modes are interpreted in ter...