Evolution of the phonon density of states of LaCoO 3 over the spin state transition

N. O. Golosova; D. P. Kozlenko; A. I. Kolesnikov; V. Yu Kazimirov; M. B. Smirnov; Z. Jirák; B. N. Savenko

doi:10.1103/PhysRevB.83.214305

Evolution of the phonon density of states of LaCoO ₃ over the spin state transition

N. O. Golosova, D. P. Kozlenko, A. I. Kolesnikov, V. Yu Kazimirov, M. B. Smirnov, Z. Jirák, B. N. Savenko

Direct Geometry

Research output: Contribution to journal › Article › peer-review

9 Scopus citations

Abstract

The phonon spectra of LaCoO ₃ 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.

Original language	English
Article number	214305
Journal	Physical Review B - Condensed Matter and Materials Physics
Volume	83
Issue number	21
DOIs	https://doi.org/10.1103/PhysRevB.83.214305
State	Published - Jun 30 2011

Access to Document

10.1103/PhysRevB.83.214305

Cite this

@article{c45370b0afe74bee9cda80f3b3820f4f,

title = "Evolution of the phonon density of states of LaCoO 3 over the spin state transition",

abstract = "The phonon spectra of LaCoO 3 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.",

author = "Golosova, {N. O.} and Kozlenko, {D. P.} and Kolesnikov, {A. I.} and Kazimirov, {V. Yu} and Smirnov, {M. B.} and Z. Jir{\'a}k and Savenko, {B. N.}",

year = "2011",

month = jun,

day = "30",

doi = "10.1103/PhysRevB.83.214305",

language = "English",

volume = "83",

journal = "Physical Review B - Condensed Matter and Materials Physics",

issn = "1098-0121",

publisher = "American Physical Society",

number = "21",

}

TY - JOUR

T1 - Evolution of the phonon density of states of LaCoO 3 over the spin state transition

AU - Golosova, N. O.

AU - Kozlenko, D. P.

AU - Kolesnikov, A. I.

AU - Kazimirov, V. Yu

AU - Smirnov, M. B.

AU - Jirák, Z.

AU - Savenko, B. N.

PY - 2011/6/30

Y1 - 2011/6/30

N2 - The phonon spectra of LaCoO 3 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.

AB - The phonon spectra of LaCoO 3 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.

UR - http://www.scopus.com/inward/record.url?scp=84856201172&partnerID=8YFLogxK

U2 - 10.1103/PhysRevB.83.214305

DO - 10.1103/PhysRevB.83.214305

M3 - Article

AN - SCOPUS:84856201172

SN - 1098-0121

VL - 83

JO - Physical Review B - Condensed Matter and Materials Physics

JF - Physical Review B - Condensed Matter and Materials Physics

IS - 21

M1 - 214305

ER -

Evolution of the phonon density of states of LaCoO ₃ over the spin state transition

Abstract

Access to Document

Other files and links

Fingerprint

Cite this