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29 March 2024
 
  » arxiv » cond-mat/0009018

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Mediation of Long Range Charge Transfer by Kondo Bound States
R.G. Endres ; D.L. Cox ; R.R.P. Singh ; S.K. Pati ;
Date 1 Sep 2000
Subject Strongly Correlated Electrons; Soft Condensed Matter | cond-mat.str-el cond-mat.soft
AffiliationU.C. Davis), S.K. Pati (JNCASR, Bangalore
AbstractWe present a theory of non-equilibrium long range charge transfer between donor and acceptor centers in a model polymer mediated by magnetic exciton (Kondo) bound states. Our model produces electron tunneling lengths easily exceeding 10$AA$, as observed recently in DNA and organic charge transfer systems. This long ranged tunneling is effective for weak to intermediate donor-bridge coupling, and is enhanced both by weak to intermediate strength Coulomb hole-electron attraction (through the orthogonality catastrophe) and by coupling to local vibrational modes.
Source arXiv, cond-mat/0009018
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