ELECTRON ELECTRON INTERACTION AND SOLITON EXCITATION(Ⅰ)——THE EFFECT OF ELECTRON CORRELATION ON THE LOCALIZATION OF SOLITON | Zendy

YunSheng Ma | Zendy; Chang-Qin Wu | Zendy; Xin Sun | Zendy; FU RONG-TANG | Zendy; FU ROU-LI | Zendy; ZHU JUN-HAO | Zendy

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ELECTRON ELECTRON INTERACTION AND SOLITON EXCITATION(Ⅰ)——THE EFFECT OF ELECTRON CORRELATION ON THE LOCALIZATION OF SOLITON

Author(s) -

YunSheng Ma,

Chang-Qin Wu,

Xin Sun,

FU RONG-TANG,

FU ROU-LI,

ZHU JUN-HAO

Publication year - 1997

Publication title -

acta physica sinica

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 0.199

H-Index - 47

ISSN - 1000-3290

DOI - 10.7498/aps.46.353

Subject(s) - electron , physics , coulomb , soliton , excitation , electronic correlation , hubbard model , condensed matter physics , atomic physics , quantum mechanics , nonlinear system , superconductivity

The effect of electron-electron interaction on the localization of soliton is studied. Because the conducting polymer possesses wide bandwidth, the Hubbard model is no longer a suitable approximation. It is needed to use a screened Coulomb potential to describe the e-e interaction. Our theory shows that the screening plays a key role in the effect of e-e interaction on the localization of soliton: in weak screening, the localization of soliton will be enhanced by the e-e interaction; in strong screening, it will be reduced. In the end, the physical reason of above-mentioned results is explained by analysing the relation between screening and electron correlation.

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