Electron Transfer in Donor-Acceptor Systems: Many-Particle Effects and Influence of Electronic Correlations

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We investigate electron transfer processes in donor-acceptor systems with a coupling of the electronic degrees of freedom to a common bosonic bath. The model allows to study many-particle effects and the influence of the local Coulomb interaction U between electrons on donor and acceptor sites. Using the non-perturbative numerical renormalization group approach we find distinct differences between the electron transfer characteristics in the single- and two-particle subspaces. We calculate the critical electron-boson coupling alpha_c as a function of $U$ and show results for density-density correlation functions in the whole parameter space. The possibility of many-particle (bipolaronic) and Coulomb-assisted transfer is discussed.
4 pages, 4 figures

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Strongly Correlated Electrons

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http://salesiana.dossiersoluciones.com/handle/123456789/97418

Consulte el texto completo en el siguiente enlace:

https://arxiv.org/abs/cond-mat/0502276
 http://arxiv.org/abs/cond-mat/0502276
 Europhys. Lett. 73, 913 (2006)
 doi:10.1209/epl/i2005-10479-1

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arXiv