Tunneling Scattering and Bridge Effect

In the case of positive electron energy, the scattering operator 

In the frame of the simplest Hartry-Fock s approximation, the variation calculation of the scattering operator t E, 8) for a few atoms has been made in the articles [12-14]. However, the variation scheme permits taking into account the different configurations in the wave function of the united system of electron and the scatterer. The general form of the scattering operator t(E, 8 Q) is [9,13,14] 

the influence of one intermediate particle on Green s function and hence on Fy is given by expressions (28) and (10). If the donor, the scatterer and the acceptor lie on one straight line, the exponential factor 

Let us deduce the general expression for the amplitude of the tunneling transition, i.e. the electron matrix element, in the presence of multiple 

The expression (28) for Green s function at one th scattering center may be rewritten as  

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