Abstract
The dynamics of a crystal containing a rigid, isolated substitutional molecular impurity is discussed using the Green’s function method. The dynamical matrix for the problem is set up, and the various constraints on the force constants are pointed out. The application of the matrix partitioning technique is then indicated, and the possibility of a resonance mode arising from molecular librations is pointed out. Comparison is made with the earlier work of Wagner, and finally the relevance of the present formalism to the interpretation of a recent neutron scattering experiment is discussed.
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References
Dzyub I P and Kochmarsky B Z 1972Acta Universitatis Wratislaviensis Report No. 181 IX Winter School of Theoretical Physics in Karpacz
Elliott R J and Maradudin A A 1965Inelastic Scattering of Neutrons (Vienna, International Atomic Energy Agency) p. 231
Maradudin A A 1969Elementary Excitations in Solids eds A A Maradudin and G F Nardelli (New York, Plenum Press)
Maradudin A A, Montroll E W, Weiss G H and Ipatova I P 1971Theory of Lattice Dynamics in the Harmonic Approximation, Second Edition, (New York, Academic Press)
Pandey G K 1968J. Chem. Phys. 49 1555
Pandey G K and Agarwal V K 1969J. Chem. Phys. 50 1935
Smith G H, Wakabayashi N and Nicklow R M 1972Neutron Inelastic Scattering (Vienna, International Atomic Energy Agency) p. 103
Venkataraman G and Sahni V C 1970Rev. Mod. Phys. 42 409
Venkataraman G, Feldkamp L A and Sahni V C 1975Dynamics of Perfect Crystals (Cambridge, Massachusetts MIT Press)
Wagner M 1963Phys. Rev. 131 2520
Wagner M 1964Phys. Rev. 133 A 750
Walton D, Mook H A and Nicklow R M 1974Phys. Rev. Lett. 33 412
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Sahoo, D., Venkataraman, G. Dynamics of a crystal containing a molecular impurity—I. Rigid molecule approximation. Pramana - J Phys 5, 175–184 (1975). https://doi.org/10.1007/BF02846587
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DOI: https://doi.org/10.1007/BF02846587