SHAPE EFFECT IN THE SPECTRUM OF MOLECULAR CRYSTALS
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Date
1963
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Publisher
Ohio State University
Abstract
“The algebraic diagonalization of the secular determinant for a doubly degenerate molecular state in a cubic crystal is straight-forward and yields (in the K = O approximation) two triply degenerate states and one doubly degenerate stale. Transitions to the triply degenerate slates are allowed. These stales are separated, according to the first order perturbation treatment used, by matrix elements for mining the sense of the angular momentum characteristic of the unperturbed doubly degenerate molecular states, upon different molecules. When the wavelength of the light is greater than the size of crystallite studied, such matrix elements are shown to be strongly dependent upon the surface energy and, thus, the shape of the crystallite. Several examples of the effect will he presented and the experimental importance will he discussed.”
Description
Author Institution: Mellon Institute; Department of Physics, State University of New York at Stony Brook