Nano-ploughed Josephson junctions as on-chip radiation sources

DOI to cite this document:: 10.5283/epub.11009

Irmer, B. ; Simmel, F. ; Blick, Robert H. ; Lorenz, H. ; Kotthaus, J. P. ; Bichler, Max ; Wegscheider, Werner

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Date of publication of this fulltext: 30 Nov 2009 13:12

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Abstract

A new technique is presented which enables the fabrication of highly transparent Josephson junctions in combination with mesoscopic devices. We utilize a modified AFM tip to plough grooves into superconducting material, thus defining a weak link. This weak link is made within the superconducting split-gates, which are used to electrostatically form a conventional quantum dot and serves as a ...