Noise properties of the Bloch oscillating transistor

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© 2005 AIP Publishing. This article may be downloaded for personal use only. Any other use requires prior permission of the authors and the American Institute of Physics. The following article appeared in Applied Physics Letters, Volume 86, Issue 17 and may be found at http://scitation.aip.org/content/aip/journal/apl/86/17/10.1063/1.1919392.

URL

Journal Title

Journal ISSN

Volume Title

School of Science | A1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

Date

2005

Major/Subject

Mcode

Degree programme

Language

en

Pages

173507/1-3

Series

Applied Physics Letters, Volume 86, Issue 17

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 1.0fA/√Hz and a corresponding noise temperature of 0.4 K. The differential current gain at the same point is as large as 30 and the power gain amounts to 35.

Description

Keywords

Bloch oscillating transistor (BOT), SQUID

Other note

Citation

Lindell, Rene & Hakonen, Pertti J. 2005. Noise properties of the Bloch oscillating transistor. Applied Physics Letters. Volume 86, Issue 17. 173507/1-3. ISSN 0003-6951 (printed). DOI: 10.1063/1.1919392