Translational-rotational interaction in dynamics and thermodynamics of 2D atomic crystal with molecular impurity

Physics in Quantum Crystals

Автор(и)

  • T.N. Antsygina B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • M.I. Poltavskaya B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine
  • K.A. Chishko B. Verkin Institute for Low Temperature Physics and Engineering of the National Academy of Sciences of Ukraine, 47 Lenin Ave., Kharkov 61103, Ukraine

DOI:

https://doi.org/10.1063/1.1614176

Ключові слова:

PACS: 68.35.Dv, 68.35.Ja, 68.65. g

Анотація

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

Як цитувати

(1)
Antsygina, T.; Poltavskaya, M.; Chishko, K. Translational-Rotational Interaction in Dynamics and Thermodynamics of 2D Atomic Crystal With Molecular Impurity: Physics in Quantum Crystals. Fiz. Nizk. Temp. 2003, 29, 961-966.

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