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Crossover from time...
Crossover from time-correlated single-electron tunneling to that of Cooper pairs
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- Bylander, Jonas, 1978 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Duty, Tim, 1963 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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- Johansson, Göran, 1971 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa fler...
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- Delsing, Per, 1959 (författare)
- Chalmers tekniska högskola,Chalmers University of Technology
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visa färre...
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(creator_code:org_t)
- 2007
- 2007
- Engelska.
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Ingår i: Physical Review B. - 2469-9969 .- 2469-9950. ; 76:2, s. 020506(R)-
- Relaterad länk:
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https://research.cha...
Abstract
Ämnesord
Stäng
- We 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.
Ämnesord
- NATURVETENSKAP -- Fysik -- Den kondenserade materiens fysik (hsv//swe)
- NATURAL SCIENCES -- Physical Sciences -- Condensed Matter Physics (hsv//eng)
Nyckelord
- Coulomb blockade
- Josephson devices
- single-electron tunneling
- Electronic transport in mesoscopic systems
- Single electron devices
Publikations- och innehållstyp
- art (ämneskategori)
- ref (ämneskategori)
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