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Shot noise of cotunneling current

Thielmann, Axel and Hettler, Matthias H. and König, Jürgen and Schön, Gerd. (2003) Shot noise of cotunneling current. In: Quantum noise in mesoscopic physics (NATO science series II, Mathematics, physics and chemistry, Vol. 97). Dordrecht, pp. 149-172.

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Official URL: http://edoc.unibas.ch/dok/A5254689

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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.
Faculties and Departments:05 Faculty of Science > Departement Physik > Physik > Theoretische Physik Mesoscopics (Loss)
UniBasel Contributors:Loss, Daniel
Item Type:Conference or Workshop Item, refereed
Conference or workshop item Subtype:Conference Paper
Bibsysno:Link to catalogue
Publisher:Kluwer Academic Publ.: 2003
Note:Publication type according to Uni Basel Research Database: Conference paper
Identification Number:
Last Modified:04 Sep 2015 14:31
Deposited On:22 Mar 2012 13:55

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