TITLE

Electron tunneling into superconducting filaments using mechanically adjustable barriers

AUTHOR(S)
Moreland, John; Ekin, J. W.
PUB. DATE
July 1985
SOURCE
Applied Physics Letters;7/15/1985, Vol. 47 Issue 2, p175
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
A new type of squeezable electron tunneling (SET) junction has been developed for tunneling into superconducting filaments. Stable, mechanically adjustable tunneling barriers between the native surfaces of sputtered Nb films and 30-µm-diam Nb filaments were established in liquid helium at 4 K. The current versus voltage characteristics of these SET junctions were used to determine the superconducting energy gap at the surface of the filaments. Since the filaments were etched from commercial superconducting magnet wire, this type of tunnel junction shows promise as a diagnostic probe of superconducting materials for high-field magnets.
ACCESSION #
9817777

 

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