It is shown that a four-site ring model allows one to interpret, on the basis of an extended Hubbard Hamiltonian, the experimental linear- and third-harmonic-generation spectra of a half-filled dimerized pi-conjugated polymer such as trans-polyacetylene. The dependence on the dimerization of the calculated electronic excitations of the model is shown to be important in explaining the experimental spectra of this type of compound.
Model for the linear and non-linear optical properties of one-dimensional organic pi-conjugated compounds
MENEGHETTI, MORENO
1993
Abstract
It is shown that a four-site ring model allows one to interpret, on the basis of an extended Hubbard Hamiltonian, the experimental linear- and third-harmonic-generation spectra of a half-filled dimerized pi-conjugated polymer such as trans-polyacetylene. The dependence on the dimerization of the calculated electronic excitations of the model is shown to be important in explaining the experimental spectra of this type of compound.File in questo prodotto:
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