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Theory of nonadiabatic electron transitions in symmetrical two-center tunnel electrochemical contact

Russian Journal of Electrochemistry, ISSN: 1023-1935, Vol: 43, Issue: 12, Page: 1335-1339
2007
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Article Description

Passage of current through two-center bridge contact is studied theoretically for a nonadiabatic mechanism of electron transfer. General expressions for steady-state current as a function of overvoltage and bias voltage are obtained. For a symmetrical contact, a simple approximate expression is derived for current in the limit when electron transfer between bridge redox-groups is the slow stage. It is shown that the current as a function of overvoltage passes through a maximum near the equilibrium potential. The shape of the maximum does not depend on the medium reorganization energy. © 2007 Pleiades Publishing, Ltd.

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