Real-Time Observation of Discrete Andreev Tunneling Events

Maisi, Ville; Saira, O.-P.; Pashkin, Yu.A.; Tsai, J.S.; Averin, D.V.; Pekola, J.P.

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Real-Time Observation of Discrete Andreev Tunneling Events

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Title:	Real-Time Observation of Discrete Andreev Tunneling Events
Author(s):	Maisi, Ville ; Saira, O.-P. ; Pashkin, Yu.A. ; Tsai, J.S. ; Averin, D.V. ; Pekola, J.P.
Date:	2011-05-25
Language:	en
Pages:	4 1-4
Department:	Department of Applied Physics
Series:	PHYSICAL REVIEW LETTERS, Volume 106, issue 21
ISSN:	0031-9007 1079-7114
DOI-number:	10.1103/PhysRevLett.106.217003
Keywords:	tunneling
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Citation: Maisi , V , Saira , O-P , Pashkin , Y A , Tsai , J S , Averin , D V & Pekola , J P 2011 , ' Real-Time Observation of Discrete Andreev Tunneling Events ' , Physical Review Letters , vol. 106 , no. 21 , 217003 , pp. 1-4 . https://doi.org/10.1103/PhysRevLett.106.217003
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.

Permanent link to this item: http://urn.fi/URN:NBN:fi:aalto-201805222486 Email this Export to RefWorks QR Code Print BibTex Tweet