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- W2060077999 abstract "The dynamical properties of an acoustic bipolaron in non-degenerate conjugated polymers such as polydiacetylene (PDA), which can be regarded as one-dimensional electron-lattice systems, are studied through numerical simulations. In these simulations, use has been made of Su-Schrieffer-Heeger's model extended to involve on-site as well as nearest-neighbor electron-electron Coulomb repulsion terms. The electron-electron interactions are treated within the unrestricted Hartree-Fock approximation. It is confirmed that the velocity of the acoustic bipolaron accelerated by a constant electric field saturates at the sound velocity of the system, and that the width of the bipolaron shrinks to zero as its velocity approaches the saturation velocity (= sound velocity). The effective mass of a bipolaron is estimated to be several hundred times as heavy as the free electron mass, in the case of PDA. These properties are compared with those of a polaron." @default.
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- W2060077999 date "2000-04-15" @default.
- W2060077999 modified "2023-09-26" @default.
- W2060077999 title "Dynamics of an Acoustic Bipolaron in One-Dimensional Electron-Lattice Systems" @default.
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- W2060077999 doi "https://doi.org/10.1143/jpsj.69.1162" @default.
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