Translational-rotational interaction in dynamics and thermodynamics of 2D atomic crystal with molecular impurity
Physics in Quantum Crystals
DOI (Low Temperature Physics):
https://doi.org/10.1063/1.1614176Ключові слова:
PACS: 68.35.Dv, 68.35.Ja, 68.65. gАнотація
The interaction between the rotational degrees of freedom of a diatomic molecular impurity and the phonon excitations of a two-dimensional atomic matrix commensurate with a substrate is investigated theoretically. It is shown, that the translational-rotational interaction changes the form of the rotational kinetic energy operator as compared to the corresponding expression for a free rotator, and also renormalizes the parameters of the crystal field without change in its initial form. The contribution of the impurity rotational degrees of freedom to the low-temperature heat capacity for a dilute solution of diatomic molecules in an atomic two-dimensional matrix is calculated. The possibility of experimental observation of the effects obtained is discussed.
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Опубліковано
2003-09-01
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T.N. Antsygina, M.I. Poltavskaya, and K.A. Chishko, Translational-rotational interaction in dynamics and thermodynamics of 2D atomic crystal with molecular impurity: Physics in Quantum Crystals, Low Temp. Phys. 29, (2003) [Fiz. Nizk. Temp. 29, 961-966, (2003)] DOI: https://doi.org/10.1063/1.1614176.
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