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Tunnelling density of states at Coulomb blockade peaks

Nicholas Sedlmayr·Igor V. Yurkevich·Igor V. Lerner
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Abstract

We calculate the tunnelling density of states (TDoS) for a quantum dot in the Coulomb blockade regime, using a functional integral representation with allowing correctly for the charge quantisation. We show that in addition to the well-known gap in the TDoS in the Coulomb-blockade valleys, there is a suppression of the TDoS at the peaks. We show that such a suppression is necessary in order to get the correct result for the peak of the differential conductance through an almost close quantum dot.

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Nicholas Sedlmayr, Igor V. Yurkevich, Igor V. Lerner. 2006-07-25. Tunnelling density of states at Coulomb blockade peaks. https://doi.org/10.1209/epl%2Fi2006-10236-0

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