Mediation of long range charge transfer by Kondo bound states

Endres, R. G. ; Cox, D. L. ; Singh, R. R. P. ; Pati, S. K. (2002) Mediation of long range charge transfer by Kondo bound states Physical Review Letters, 88 (16). pp. 166601-166604. ISSN 0031-9007

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Official URL: http://link.aps.org/doi/10.1103/PhysRevLett.88.166...

Related URL: http://dx.doi.org/10.1103/PhysRevLett.88.166601

Abstract

We present a theory of nonequilibrium 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 10Å, 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.

Item Type:Article
Source:Copyright of this article belongs to The American Physical Society.
ID Code:60784
Deposited On:12 Sep 2011 07:06
Last Modified:18 May 2016 10:46

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