Charge fluctuations in single-electron tunneling oscillations
Idioma
en
Article de revue
Este ítem está publicado en
Physical Review B: Condensed Matter and Materials Physics (1998-2015). 2012-03-12, vol. 85, n° 11, p. 115416
American Physical Society
Resumen en inglés
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 ...Leer más >
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.< Leer menos
Palabras clave
Coulomb blockade
transport in tunnel junctions
Single-electron tunneling oscillations
current fluctuations
Orígen
Importado de HalCentros de investigación