Crossover from time-correlated single-electron tunneling to that of Cooper pairs

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dc.creatorBylander, J.
dc.creatorDuty, T.
dc.creatorJohansson, G.
dc.creatorDelsing, P.
dc.date2007-05-21
dc.date2007-11-07
dc.date.accessioned2026-07-07T08:40:53Z
dc.date.available2026-07-07T08:40:53Z
dc.descriptionWe have studied charge transport in a one-dimensional chain of small Josephson junctions using a single-electron transistor. We observe a crossover from time-correlated tunneling of single electrons to that of Cooper pairs as a function of both magnetic field and current. At relatively high magnetic field, single-electron transport dominates and the tunneling frequency is given by f=I/e, where I is the current through the chain and e is the electron's charge. As the magnetic field is lowered, the frequency gradually shifts to f=I/2e for I>200 fA, indicating Cooper-pair transport. For the parameters of the measured sample, we expect the Cooper-pair transport to be incoherent.
dc.description5 pages, 4 figures; v2: minor changes, clarifications, additions
dc.identifierhttps://arxiv.org/abs/0705.2964
dc.identifierhttp://arxiv.org/abs/0705.2964
dc.identifierPhys. Rev. B vol. 76, 020506(R) (2007)
dc.identifierdoi:10.1103/PhysRevB.76.020506
dc.identifier.urihttp://salesiana.dossiersoluciones.com/handle/123456789/141506
dc.subjectSuperconductivity
dc.subjectMesoscale and Nanoscale Physics
dc.titleCrossover from time-correlated single-electron tunneling to that of Cooper pairs
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