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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2012

Charge fluctuations in single-electron tunneling oscillations

Carlotta Negri
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Résumé

It has been predicted that in the presence of a sufficiently high-dissipative environment transport in a small tunnel junction can become extremely regular, giving rise to the phenomenon of single-electron tunneling oscillations. Recent progress in detection of high-frequency current fluctuations and the interest in single-electron sources motivate further investigations on the expected accuracy of the charge oscillations as a function of the impedance of the environment. In this paper we study theoretically the charge-fluctuation spectrum at finite frequency for the system at hand, and investigate its evolution as a function of the external impedance. The evolution and the disappearance of the single-electron oscillations peak is described by analytical and numerical methods.
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Dates et versions

hal-00642045 , version 1 (17-11-2011)
hal-00642045 , version 2 (13-03-2012)

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Carlotta Negri, Fabio Pistolesi. Charge fluctuations in single-electron tunneling oscillations. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2012, 85 (11), pp.115416. ⟨10.1103/PhysRevB.85.115416⟩. ⟨hal-00642045v2⟩

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