Abstract
We review the mechanisms of low-temperature electron transport across a quantum dot weakly coupled to two conducting leads. Conduction in this case is controlled by the interaction between electrons. At temperatures moderately lower than the single-electron charging energy of the dot, the linear conductance is suppressed by the Coulomb blockade. Upon further lowering of the temperature, however, the conductance may start to increase again due to the Kondo effect. This increase occurs only if the dot has a non-zero spin S. We concentrate on the simplest case of S = 1/2, and discuss the conductance across the dot in a broad temperature range, which includes the Kondo temperature. Temperature dependence of the linear conductance in the Kondo regime is discussed in detail. We also consider a simple (but realistic) limit in which the differential conductance at a finite bias can be fully investigated.
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Glazman, L.I., Pustilnik, M. (2003). Coulomb blockade and Kondo effect in quantum dots. In: Fazio, R., Gantmakher, V.F., Imry, Y. (eds) New Directions in Mesoscopic Physics (Towards Nanoscience). NATO Science Series, vol 125. Springer, Dordrecht. https://doi.org/10.1007/978-94-007-1021-4_4
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DOI: https://doi.org/10.1007/978-94-007-1021-4_4
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