## Contribution to a collection: Shot Noise of Cotunneling Current

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2003
##### Editors
Sukhorukov, Eugene V.
Loss, Daniel
##### Publication type
Contribution to a collection
##### Abstract
We study the noise of the cotunneling current through one or several tunnel-coupled quantum dots in the Coulomb blockade regime. The various regimes of weak and strong, elastic and inelastic cotunneling are analyzed for quantum-dot systems (QDS) with few-level, nearly-degenerate, and continuous electronic spectra. In the case of weak cotunneling we prove a non-equilibrium fluctuation-dissipation theorem which leads to a universal expression for the noise-to-current ratio (Fano factor). The noise of strong inelastic cotunneling can be super-Poissonian due to switching between QDS states carrying currents of different strengths. The transport through a double-dot (DD) system shows an Aharonov-Bohm effect both in noise and current. In the case of cotunneling through a QDS with a continuous energy spectrum the Fano factor is very close to one.
530 Physics
##### Published in
Quantum Noise in Mesoscopic systems / Nazarov, Yu. V. (ed.). - Dordrecht : Springer Netherland, 2003. - pp. 149-172
##### Cite This
ISO 690SUKHORUKOV, Eugene V., Guido BURKARD, Daniel LOSS, 2003. Shot Noise of Cotunneling Current. In: NAZAROV, Yu. V., ed.. Quantum Noise in Mesoscopic systems. Dordrecht:Springer Netherland, pp. 149-172. Available under: doi: 10.1007/978-94-010-0089-5_8
BibTex
@incollection{Sukhorukov2003Noise-9303,
year={2003},
doi={10.1007/978-94-010-0089-5_8},
title={Shot Noise of Cotunneling Current},
publisher={Springer Netherland},
booktitle={Quantum Noise in Mesoscopic systems},
pages={149--172},
editor={Nazarov, Yu. V.},
author={Sukhorukov, Eugene V. and Burkard, Guido and Loss, Daniel}
}

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<dcterms:abstract xml:lang="eng">We study the noise of the cotunneling current through one or several tunnel-coupled quantum dots in the Coulomb blockade regime. The various regimes of weak and strong, elastic and inelastic cotunneling are analyzed for quantum-dot systems (QDS) with few-level, nearly-degenerate, and continuous electronic spectra. In the case of weak cotunneling we prove a non-equilibrium fluctuation-dissipation theorem which leads to a universal expression for the noise-to-current ratio (Fano factor). The noise of strong inelastic cotunneling can be super-Poissonian due to switching between QDS states carrying currents of different strengths. The transport through a double-dot (DD) system shows an Aharonov-Bohm effect both in noise and current. In the case of cotunneling through a QDS with a continuous energy spectrum the Fano factor is very close to one.</dcterms:abstract>
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<dcterms:bibliographicCitation>First publ. in: arXiv:cond-mat/0211024 [cond-mat.mes-hall], also publ. in: Quantum Noise in Mesoscopic Systems / Yu. V. Nazarov (eds.). Dordrecht: Springer Netherland, 2003, pp. 149-172</dcterms:bibliographicCitation>
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