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Nonlinear transport at the strong intra-dot Coulomb interaction
KTH, School of Engineering Sciences (SCI), Theoretical Physics, Condensed Matter Theory.
2006 (English)In: Journal of Physics: Condensed Matter, ISSN 0953-8984, E-ISSN 1361-648X, Vol. 18, no 5, L55-L61 p.Article in journal (Refereed) Published
Abstract [en]

Nonlinear transport is studied in the limit of weak and strong intra-dot Coulomb interaction. The nonequilibrium self-consistent mean-field equations for one-electron transition energies of an open dot and their spectral weights are derived at the strong Coulomb interaction. In this limit populations of states involved in tunnelling equalize upon the increase of the bias-voltage window even at low temperature. This results in a simple analytical relation between the heights of the current steps and the degeneracy of a spectrum in a two-dimensional parabolic dot in a magnetic field.

Place, publisher, year, edition, pages
2006. Vol. 18, no 5, L55-L61 p.
National Category
Physical Sciences
URN: urn:nbn:se:kth:diva-37611DOI: 10.1088/0953-8984/18/5/L01ISI: 000235921400001ScopusID: 2-s2.0-31144458873OAI: diva2:434469
Available from: 2011-08-15 Created: 2011-08-15 Last updated: 2011-08-15Bibliographically approved

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Sandalov, Igor
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