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Effects of nonorthogonality in the time-dependent current through tunnel junctions

J. Fransson·O. Eriksson·I. Sandlov
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Abstract

A theoretical technique which allows to include contributions from non-orthogonality of the electron states in the leads connected to a tunneling junction is derived. The theory is applied to a single barrier tunneling structure and a simple expression for the time-dependent tunneling current is derived showing explicit dependence of the overlap. The overlap proves to be necessary for a better quantitative description of the tunneling current, and our theory reproduces experimental results substantially better compared to standard approaches.

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J. Fransson, O. Eriksson, I. Sandlov. 2001-11-30. Effects of nonorthogonality in the time-dependent current through tunnel junctions. https://doi.org/10.1103/physrevb.64.153403

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