TITLE

Noise properties of the Bloch oscillating transistor

AUTHOR(S)
Lindell, René; Hakonen, Pertti
PUB. DATE
April 2005
SOURCE
Applied Physics Letters;4/25/2005, Vol. 86 Issue 17, p173507
SOURCE TYPE
Academic Journal
DOC. TYPE
Article
ABSTRACT
We have measured the current noise spectral density of the Bloch oscillating transistor as a function of current gain. We find, as expected from theory and simulations, that the equivalent input noise that shows up in the output is less than the shot noise of the normal-insulating-superconductor tunnel junction (base junction). At the optimal operating point we find a reduced input current noise of 1.0 fA/√Hz and a corresponding noise temperature of 0.4 K. The differential current gain at the same joint is as large as 30 and the power gain amounts to 35.
ACCESSION #
17227572

 

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