Home > Research > Publications & Outputs > Real-time observation of discrete Andreev tunne...

Electronic data

Text available via DOI:

View graph of relations

Real-time observation of discrete Andreev tunneling events

Research output: Contribution to journalJournal article

Published
  • V. F. Maisi
  • O. -P. Saira
  • Yuri Pashkin
  • J. S. Tsai
  • D. V. Averin
  • J. P. Pekola
Close
Article number217003
<mark>Journal publication date</mark>25/05/2011
<mark>Journal</mark>Physical Review Letters
Issue number21
Volume106
Number of pages4
Pages (from-to)-
<mark>State</mark>Published
<mark>Original language</mark>English

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.

Bibliographic note

© 2011 American Physical Society