Real-Time Observation of Discrete Andreev Tunneling Events
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© 2011 American Physical Society (APS). http://www.aps.org/
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A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä
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Date
2011
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en
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217003/1-4
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Physical Review Letters, Volume 106, Issue 21
Abstract
We provide a direct proof of two-electron Andreev transitions in a superconductor–normal-metal tunnel junction by detecting them in a real-time electron counting experiment. Our results are consistent with ballistic Andreev transport with an order of magnitude higher rate than expected for a uniform barrier, suggesting that only part of the interface is effectively contributing to the transport. These findings are quantitatively supported by our direct current measurements in single-electron transistors with similar tunnel barriers.Description
Keywords
Andreev transitions, superconductors, tunneling, junctions, transistors
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Citation
Maisi, V. F. & Saira, O.-P. & Pashkin, Yu. A. & Tsai, J. S. & Averin, D. V. & Pekola, Jukka. 2011. Real-Time Observation of Discrete Andreev Tunneling Events. Physical Review Letters. Volume 106, Issue 21. 217003/1-4. ISSN 0031-9007 (printed). DOI: 10.1103/physrevlett.106.217003.