Contribution to a collection: Shot Noise of Cotunneling Current
Shot Noise of Cotunneling Current
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2003
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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.
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530 Physics
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Quantum Noise in Mesoscopic systems / Nazarov, Yu. V. (ed.). - Dordrecht : Springer Netherland, 2003. - pp. 149-172
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SUKHORUKOV, 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_8BibTex
@incollection{Sukhorukov2003Noise-9303, year={2003}, doi={10.1007/978-94-010-0089-5_8}, title={Shot Noise of Cotunneling Current}, publisher={Springer Netherland}, address={Dordrecht}, 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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