Research output: Contribution to journal › Article › peer-review
Manifestation of Davydov Splitting in the Contours of the Fundamental Bands ν3 and ν2 in the Reflection and Absorption IR Spectra of Crystalline CO2. / Катаева, Татьяна Сергеевна; Голубкова, Ольга Сергеевна; Асфин, Руслан Евгеньевич; Песцов, Олег Сергеевич; Щепкин, Дмитрий Николаевич.
In: Russian Journal of Physical Chemistry A, Vol. 99, No. 4, 01.04.2025, p. 764-772.Research output: Contribution to journal › Article › peer-review
}
TY - JOUR
T1 - Manifestation of Davydov Splitting in the Contours of the Fundamental Bands ν3 and ν2 in the Reflection and Absorption IR Spectra of Crystalline CO2
AU - Катаева, Татьяна Сергеевна
AU - Голубкова, Ольга Сергеевна
AU - Асфин, Руслан Евгеньевич
AU - Песцов, Олег Сергеевич
AU - Щепкин, Дмитрий Николаевич
PY - 2025/4/1
Y1 - 2025/4/1
N2 - Reflection-absorption IR (RAIR) spectra of carbon dioxide (CO2) thin crystalline films at 7 K in the region of fundamental ν3 and ν2 modes were studied. The Davydov splitting (DS) (or factor group splitting) on the fundamental bands were studied. The calculation of the DS was provided in the framework of resonant dipole-dipole (RDD) interaction. The shifts of the TO-branch due to DS were calculated for the ν3 and ν2 bands. In case of the ν3 band, the results obtained are in qualitative and quantitative agreement within 0.1 cm–1. For the ν2 band, the calculated splitting value is 15% greater than the experimental value.
AB - Reflection-absorption IR (RAIR) spectra of carbon dioxide (CO2) thin crystalline films at 7 K in the region of fundamental ν3 and ν2 modes were studied. The Davydov splitting (DS) (or factor group splitting) on the fundamental bands were studied. The calculation of the DS was provided in the framework of resonant dipole-dipole (RDD) interaction. The shifts of the TO-branch due to DS were calculated for the ν3 and ν2 bands. In case of the ν3 band, the results obtained are in qualitative and quantitative agreement within 0.1 cm–1. For the ν2 band, the calculated splitting value is 15% greater than the experimental value.
KW - CO2 crystalline thin films
KW - Davydov splitting
KW - absorption spectra
KW - dipole-dipole interaction
KW - low-temperature crystal
KW - reflection spectra
UR - https://www.mendeley.com/catalogue/12426112-c6ce-3d57-aea5-247f2c39d727/
U2 - 10.1134/S0036024425700372
DO - 10.1134/S0036024425700372
M3 - Article
VL - 99
SP - 764
EP - 772
JO - Russian Journal of Physical Chemistry A
JF - Russian Journal of Physical Chemistry A
SN - 0036-0244
IS - 4
ER -
ID: 135430542