Abstract
The quantum mechanical lattice dynamics formalism developed in the preceding paper for molecular solids is applied to the librational modes at k=0 in solid α-N2, CO2, and o-H2, interacting through a quadrupole-quadrupole potential. Librational wavefunctions are constructed for α-N2 and CO2, and free rotor wavefunctions were used for librons in solid o-H2. It is found that the quantum-mechanical lattice frequencies provide nonnegligible, though not dramatic, corrections to the frequencies calculated in the classical harmonic approximation. For α-N2 the quadrupole potential provides a satisfactory description of the anisotropic potential, with the quantum-mechanical frequencies significantly closer to experiment than the classical ones. For CO2 the quadrupole potential provides only part of the anisotropic potential.
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Dates
Type | When |
---|---|
Created | 21 years, 6 months ago (Feb. 6, 2004, 4:02 p.m.) |
Deposited | 1 year, 6 months ago (Feb. 9, 2024, 5:33 a.m.) |
Indexed | 1 year, 6 months ago (Feb. 9, 2024, 3:05 p.m.) |
Issued | 52 years, 11 months ago (Sept. 15, 1972) |
Published | 52 years, 11 months ago (Sept. 15, 1972) |
Published Print | 52 years, 11 months ago (Sept. 15, 1972) |
@article{Jacobi_1972, title={Quantum Lattice Dynamics of Molecular Solids. II. Application to the Librations of Solid CO2, α-N2, and o-H2}, volume={57}, ISSN={1089-7690}, url={http://dx.doi.org/10.1063/1.1678618}, DOI={10.1063/1.1678618}, number={6}, journal={The Journal of Chemical Physics}, publisher={AIP Publishing}, author={Jacobi, Nathan and Schnepp, O.}, year={1972}, month=sep, pages={2516–2525} }