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Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes.

Publication ,  Journal Article
Borzenets, IV; Amet, F; Ke, CT; Draelos, AW; Wei, MT; Seredinski, A; Watanabe, K; Taniguchi, T; Bomze, Y; Yamamoto, M; Tarucha, S; Finkelstein, G
Published in: Physical review letters
December 2016

We investigate the critical current I_{C} of ballistic Josephson junctions made of encapsulated graphene-boron-nitride heterostructures. We observe a crossover from the short to the long junction regimes as the length of the device increases. In long ballistic junctions, I_{C} is found to scale as ∝exp(-k_{B}T/δE). The extracted energies δE are independent of the carrier density and proportional to the level spacing of the ballistic cavity. As T→0 the critical current of a long (or short) junction saturates at a level determined by the product of δE (or Δ) and the number of the junction's transversal modes.

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Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

December 2016

Volume

117

Issue

23

Start / End Page

237002

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences
 

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Borzenets, I. V., Amet, F., Ke, C. T., Draelos, A. W., Wei, M. T., Seredinski, A., … Finkelstein, G. (2016). Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes. Physical Review Letters, 117(23), 237002. https://doi.org/10.1103/physrevlett.117.237002
Borzenets, I. V., F. Amet, C. T. Ke, A. W. Draelos, M. T. Wei, A. Seredinski, K. Watanabe, et al. “Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes.Physical Review Letters 117, no. 23 (December 2016): 237002. https://doi.org/10.1103/physrevlett.117.237002.
Borzenets IV, Amet F, Ke CT, Draelos AW, Wei MT, Seredinski A, et al. Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes. Physical review letters. 2016 Dec;117(23):237002.
Borzenets, I. V., et al. “Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes.Physical Review Letters, vol. 117, no. 23, Dec. 2016, p. 237002. Epmc, doi:10.1103/physrevlett.117.237002.
Borzenets IV, Amet F, Ke CT, Draelos AW, Wei MT, Seredinski A, Watanabe K, Taniguchi T, Bomze Y, Yamamoto M, Tarucha S, Finkelstein G. Ballistic Graphene Josephson Junctions from the Short to the Long Junction Regimes. Physical review letters. 2016 Dec;117(23):237002.

Published In

Physical review letters

DOI

EISSN

1079-7114

ISSN

0031-9007

Publication Date

December 2016

Volume

117

Issue

23

Start / End Page

237002

Related Subject Headings

  • General Physics
  • 51 Physical sciences
  • 49 Mathematical sciences
  • 40 Engineering
  • 09 Engineering
  • 02 Physical Sciences
  • 01 Mathematical Sciences