Tunnelling density of states at Coulomb blockade peaks

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.

6 pages, 2 figures

References in corpus (1)

• The Interplay of Spin and Charge Channels in Zero Dimensional Systems

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