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Proceedings Paper

Higher-order tunneling processes and enhanced shot noise in superconducting tunnel devices
Author(s): Teun M. Klapwijk
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Paper Abstract

Tunnel barriers play a key role in current applications of superconducting tunnel-devices for THz frequency heterodyne mixing and for magentic tunnel junctions for data-storage applications. Shot noise in the tunnel current limits the sensitivity of tunnel junctions as high frequency detectors. The observed voltage dependence has proven to be a valuable probe to evaluate the quality of the tunnel barrier, in particular for inhomogeneities in thickness or at least for a distribution of transmissivities. It is an open question whether similar measurements can be made informative for magnetic tunnel junctions as well.

Paper Details

Date Published: 9 May 2003
PDF: 11 pages
Proc. SPIE 5112, Noise as a Tool for Studying Materials, (9 May 2003); doi: 10.1117/12.496957
Show Author Affiliations
Teun M. Klapwijk, Delft Univ. of Technology (Netherlands)


Published in SPIE Proceedings Vol. 5112:
Noise as a Tool for Studying Materials
Michael B. Weissman; Nathan E. Israeloff; A. Shulim Kogan, Editor(s)

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