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Doh YJ, van Dam JA, Roest AL, et al. Tunable supercurrent through semiconductor nanowires. Science. 2005;309(5732):272-5doi: 10.1126/science.1113523.
Doh, Y. J., van Dam, J. A., Roest, A. L., Bakkers, E. P., Kouwenhoven, L. P., & De Franceschi, S. (2005). Tunable supercurrent through semiconductor nanowires. Science (New York, N.Y.), 309(5732), 272-5. https://doi.org/10.1126/science.1113523
Doh, Yong-Joo, et al. "Tunable supercurrent through semiconductor nanowires." Science (New York, N.Y.) vol. 309,5732 (2005): 272-5. doi: https://doi.org/10.1126/science.1113523
Doh YJ, van Dam JA, Roest AL, Bakkers EP, Kouwenhoven LP, De Franceschi S. Tunable supercurrent through semiconductor nanowires. Science. 2005 Jul 08;309(5732):272-5. doi: 10.1126/science.1113523. PMID: 16002611.
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Science. 2005 Jul 08;309(5732):272-5. doi: 10.1126/science.1113523.

Tunable supercurrent through semiconductor nanowires.

Science (New York, N.Y.)

Yong-Joo Doh, Jorden A van Dam, Aarnoud L Roest, Erik P A M Bakkers, Leo P Kouwenhoven, Silvano De Franceschi

Affiliations

  1. Kavli Institute of Nanoscience, Delft University of Technology, Post Office Box 5046, 2600 GA Delft, Netherlands.

PMID: 16002611 DOI: 10.1126/science.1113523

Abstract

Nanoscale superconductor/semiconductor hybrid devices are assembled from indium arsenide semiconductor nanowires individually contacted by aluminum-based superconductor electrodes. Below 1 kelvin, the high transparency of the contacts gives rise to proximity-induced superconductivity. The nanowires form superconducting weak links operating as mesoscopic Josephson junctions with electrically tunable coupling. The supercurrent can be switched on/off by a gate voltage acting on the electron density in the nanowire. A variation in gate voltage induces universal fluctuations in the normal-state conductance, which are clearly correlated to critical current fluctuations. The alternating-current Josephson effect gives rise to Shapiro steps in the voltage-current characteristic under microwave irradiation.

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