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Effects of nonorthogonality in the time-dependent current through tunnel junctions
Condensed Matter Theory Group, Uppsala University, Uppsala, Sweden.
Condensed Matter Theory Group, Uppsala University, Uppsala, Sweden.
Condensed Matter Theory Group, Uppsala University, Uppsala, Sweden.
2001 (English)In: Physical Review B. Condensed Matter and Materials Physics, ISSN 1098-0121, E-ISSN 1550-235X, Vol. 64, no 15Article in journal (Refereed) Published
Abstract [en]

A theoretical technique which allows one to include contributions from nonorthogonality 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.

Place, publisher, year, edition, pages
2001. Vol. 64, no 15
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:liu:diva-49104DOI: 10.1103/PhysRevB.64.153403OAI: oai:DiVA.org:liu-49104DiVA: diva2:270000
Available from: 2009-10-11 Created: 2009-10-11 Last updated: 2017-12-12

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