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Direct observation of time correlated single-electron tunneling

Jonas Bylander (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Tim Duty (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik) ; Per Delsing (Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik)
Conference Program and Extended Abstracts. 10th International Superconductive Electronics Conference p. O-J.02. (2005)
[Konferensbidrag, övrigt]

We report a direct detection of time correlated single-electron tunneling oscillations in a series array of small tunnel junctions. Here the current, I, is made up of a lattice of charge solitons moving throughout the array by time correlated tunneling with the frequency f=I/e, where e is the electron charge. To detect the single charges, we have integrated the array with a radio-frequency single-electron transistor (RF-SET) and employed two different methods to couple the array to the SET input: by direct injection through a tunnel junction, and by capacitive coupling. In this paper we report the results from the latter type of charge input, where we have observed the oscillations in the frequency domain and measured currents from 50 to 250 fA by means of electron counting.



Denna post skapades 2006-08-29. Senast ändrad 2016-08-15.
CPL Pubid: 6991

 

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Institutioner (Chalmers)

Institutionen för mikroteknologi och nanovetenskap, Kvantkomponentfysik

Ämnesområden

Fysik

Chalmers infrastruktur

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Time-resolved detection of temporally correlated, single-charge tunnelling