Abstract

Abstract Quasi-one-dimensional π-conjugated organic polymer ferromagnets are studied self-consistently. It is shown that due to the electron-phonon interaction and the Hubbard energy, there exist domain wall solitons describing the displacement of lattices along the main chain, and spin solitons describing the localization of spin at side radicals. The spin soliton corresponds to the highly degenerate band in the middle of the energy spectra, which gives the main contribution in the high-spin state of the system.

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