Tunnelling density of states at Coulomb-blockade peaks

N. Sedlmayr; I.V. Yurkevich; I.V. Lerner

doi:10.1209/epl/i2006-10236-0

Tunnelling density of states at Coulomb-blockade peaks

N. Sedlmayr, I.V. Yurkevich, I.V. Lerner

Research output: Contribution to journal › Article › peer-review

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.

Original language	English
Pages (from-to)	109-114
Number of pages	6
Journal	EPL
Volume	76
Issue number	1
DOIs	https://doi.org/10.1209/epl/i2006-10236-0
Publication status	Published - Oct 2006

Bibliographical note

Tunnelling density of states at Coulomb-blockade
peaks. N. Sedlmayr et al 2006 EPL 76 109 © EDP Sciences

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10.1209/epl/i2006-10236-0

Tunnelling density of states at Coulomb-blockade peaks
Tunnelling density of states at Coulomb-blockade peaks. N. Sedlmayr et al 2006 EPL 76 109 © EDP Sciences
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AU - Sedlmayr, N.

AU - Yurkevich, I.V.

AU - Lerner, I.V.

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N2 - 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.

AB - 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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JO - EPL

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ER -

Tunnelling density of states at Coulomb-blockade peaks

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