NEGRI, Carlotta; PISTOLESI, Fabio

doi:10.1103/PhysRevB.85.115416

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NEGRI, Carlotta
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

PISTOLESI, Fabio
Laboratoire Ondes et Matière d'Aquitaine [LOMA]

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Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2012-03-12, vol. 85, n° 11, p. 115416

American Physical Society

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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.< Réduire

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Coulomb blockade

transport in tunnel junctions

Single-electron tunneling oscillations

current fluctuations

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Charge fluctuations in single-electron tunneling oscillations

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