Effects of nonorthogonality in the time-dependent current through tunnel junctions
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
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
IdentifiersURN: urn:nbn:se:liu:diva-49104DOI: 10.1103/PhysRevB.64.153403OAI: oai:DiVA.org:liu-49104DiVA: diva2:270000