Three-body scattering problem and two-electron tunneling in molecular wires

Details Three-body scattering problem and two-electron tunneling in molecular wires Three-body scattering problem and two-electron tunneling in molecular wires

2001-09-13

arxiv.org/abs/cond-mat/0109226v1

Physics

Condensed Matter

Strongly Correlated Electrons

5 pages, 2 figures

Scientific paper

We solve the Lippmann-Schwinger equation describing elastic scattering of preformed pairs (e.g. bipolarons) off a short-range scattering center and find the two-particle transmission through a thin potential barrier. While the pair transmission is smaller than the single-electron transmission in the strong-coupling limit, it is remarkably larger in the weak coupling limit. We also calculate current-voltage characteristics of a molecule - barrier - molecule junction. They show unusual temperature and voltage behavior which are experimentally verifiable at low temperatures.

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