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

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

2001-11-30

arxiv.org/abs/cond-mat/0111575v1

Phys. Rev. B 64 153403 (2001) (Brief Reports)

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

4 pages, 1 table, 1 figure

Scientific paper

10.1103/PhysRevB.64.153403

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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