Abstract
The recent progress in nanodevice technology yielded the possibility of forming so-called quantum dots (QD) or artificial atoms (AA) [1, 2]. At low temperatures and when a QD is strongly coupled to the leads, electronic transport phenomena through such a nanodevice are dominated by strong electron correlations [3, 4]. The aim of the present paper is to calculate the current tunnelling through the quantum dot in the strong coupling regime. Differential conductance vs. bias voltage dependence gives information on the density of states (i.e. the spectrum) of the investigated system. That kind of tunneling conductance spectroscopy of a two-level AA is presented. We introduce hybridization mediated effective inter-level mixing controlled by the electron correlations. Multi-level QD conductance in the strong coupling regime was investigated in [5, 6], however, the inter-level mixing was not taken into account in the calculations.
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Stefański, P., Bułka, B.R. (2002). Tunneling Conductance Spectroscopy of the Two-Level Kondo Artificial Atom. In: Graja, A., Bułka, B.R., Kajzar, F. (eds) Molecular Low Dimensional and Nanostructured Materials for Advanced Applications. NATO Science Series, vol 59. Springer, Dordrecht. https://doi.org/10.1007/978-94-010-0349-0_37
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DOI: https://doi.org/10.1007/978-94-010-0349-0_37
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