Vibronic solitons in a (nearly-) degenerate electronic system along a 1-D chain

Details Vibronic solitons in a (nearly-) degenerate electronic system along a 1-D chain Vibronic solitons in a (nearly-) degenerate electronic system along a 1-D chain

2006-04-19

arxiv.org/abs/cond-mat/0604462v1

Physics

Condensed Matter

Materials Science

7 pages, 1 figure pdf format

Scientific paper

We consider the formation and stability of the vibronic polaron arising in a degenerate or nearly degenerate electronic system coupled to an appropriate vibrational mode. We define the electron-phonon coupling as a mixing of the electronic states by the phonon mode. Our investigation is similar to that carried out recently by Dennis Clougherty though by introducing a different coupling operator. This extends the vibronic coupling range beyond the limits set by the difference in electronic density of the progenitor bands thereby widening the applicability range of the coupled soliton.

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