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Critical Current Scaling in Long Diffusive Graphene-Based Josephson Junctions.

Publication ,  Journal Article
Ke, CT; Borzenets, IV; Draelos, AW; Amet, F; Bomze, Y; Jones, G; Craciun, M; Russo, S; Yamamoto, M; Tarucha, S; Finkelstein, G
Published in: Nano letters
August 2016

We present transport measurements on long, diffusive, graphene-based Josephson junctions. Several junctions are made on a single-domain crystal of CVD graphene and feature the same contact width of ∼9 μm but vary in length from 400 to 1000 nm. As the carrier density is tuned with the gate voltage, the critical current in these junctions ranges from a few nanoamperes up to more than 5 μA, while the Thouless energy, ETh, covers almost 2 orders of magnitude. Over much of this range, the product of the critical current and the normal resistance ICRN is found to scale linearly with ETh, as expected from theory. However, the value of the ratio ICRN/ETh is found to be 0.1-0.2, which much smaller than the predicted ∼10 for long diffusive SNS junctions.

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Published In

Nano letters

DOI

EISSN

1530-6992

ISSN

1530-6984

Publication Date

August 2016

Volume

16

Issue

8

Start / End Page

4788 / 4791

Related Subject Headings

  • Nanoscience & Nanotechnology
 

Citation

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MLA
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Ke, C. T., Borzenets, I. V., Draelos, A. W., Amet, F., Bomze, Y., Jones, G., … Finkelstein, G. (2016). Critical Current Scaling in Long Diffusive Graphene-Based Josephson Junctions. Nano Letters, 16(8), 4788–4791. https://doi.org/10.1021/acs.nanolett.6b00738
Ke, Chung Ting, Ivan V. Borzenets, Anne W. Draelos, Francois Amet, Yuriy Bomze, Gareth Jones, Monica Craciun, et al. “Critical Current Scaling in Long Diffusive Graphene-Based Josephson Junctions.Nano Letters 16, no. 8 (August 2016): 4788–91. https://doi.org/10.1021/acs.nanolett.6b00738.
Ke CT, Borzenets IV, Draelos AW, Amet F, Bomze Y, Jones G, et al. Critical Current Scaling in Long Diffusive Graphene-Based Josephson Junctions. Nano letters. 2016 Aug;16(8):4788–91.
Ke, Chung Ting, et al. “Critical Current Scaling in Long Diffusive Graphene-Based Josephson Junctions.Nano Letters, vol. 16, no. 8, Aug. 2016, pp. 4788–91. Epmc, doi:10.1021/acs.nanolett.6b00738.
Ke CT, Borzenets IV, Draelos AW, Amet F, Bomze Y, Jones G, Craciun M, Russo S, Yamamoto M, Tarucha S, Finkelstein G. Critical Current Scaling in Long Diffusive Graphene-Based Josephson Junctions. Nano letters. 2016 Aug;16(8):4788–4791.
Journal cover image

Published In

Nano letters

DOI

EISSN

1530-6992

ISSN

1530-6984

Publication Date

August 2016

Volume

16

Issue

8

Start / End Page

4788 / 4791

Related Subject Headings

  • Nanoscience & Nanotechnology