Effects of the Bond-Bending Term and e-e Interactions on the 2D Localized Modes Around a Polaron in Trans-Polyacetylene |
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| Authors: | K. L. YAO Z. J. LI Z. AN Z. L. LIU |
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| Affiliation: | 1. National Laboratory of Laser Technology and Department of Physics Huazhong University of Science and Technology, Wuhan 430074, China;2. International Center for Materials Science, Shenyang 110015, China |
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| Abstract: | The 2D localized modes of trans-(CH)x around a polaron have been studied using a twodimensional extension of the SSH model that includes the bond-bending effect and the electron-electron interactions. The results show that 1) a number of additional localized modes have been found, which depend on the bond-bending term; 2) the number oflocalized modes does not change after turning on the e-e interactions, but their frequencies have been moved and the localization has been strengthened. |
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