2011/11/30 by C. Negri, Carlotta Negri, Fabio Pistolesi +1 · 9 citations
Chemistry · Engineering · Physics and Astronomy · #Charge (physics) #Chemistry #Condensed matter physics #Dissipative system #Electrical impedance #Electron #Low frequency #Molecular Junctions and Nanostructures #Oscillation (cell signaling) #Physics #Quantum and electron transport phenomena #Quantum mechanics #Quantum tunnelling #Semiconductor Quantum Structures and Devices #cond-mat.mes-hall
paper · pdf · doi:10.1103/physrevb.85.115416
published in Physical Review B 85(11) (American Physical Society) · 11 pages, 12 figures
openalex publication_date 2012/03/12 · arxiv created 2012/03/13 · arxiv updated 2012/03/14 · openalex created_date 2025/10/10 · openalex updated_date 2026/08/05
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 behavior 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.