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The influence of an external magnetic field on the rate of electron transfer is studied theoretically for the case of a donor-acceptor complex with paramagnetic ions as bridging sites. We demonstrate for a bridge with a single and with two paramagnetic ions that the applied magnetic field causes a blocking effect of the electron transfer. Each paramagnetic ion staying in its electronic ground state...
It is shown that interelectrode tunnel current through a quantum molecular wire (QMW) depends essentially on the relation between the dynamic properties of QMW and the relaxation processes within electrodes and donor (acceptor) units. Within the framework of the adiabatic approximation, it is found that image forces from the electrodes change the tunnel current by several orders of magnitude. It depends...
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