Measurements of shot noise in single walled carbon nanotubes

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Journal Title
Journal ISSN
Volume Title
School of Science | A4 Artikkeli konferenssijulkaisussa
Date
2007
Major/Subject
Mcode
Degree programme
Language
en
Pages
257-260
Series
AIP Conference Proceedings, 922
Abstract
We have measured shot noise in single walled carbon nanotubes (SWNT) at 4.2K over frequencies f = 600 – 850 MHz. Here we report results obtained on shot noise without DC bias by applying an AC modulation at ω0 and recording the noise variation at 2ω0: the Fano factor is obtained by extrapolating down to zero excitation amplitude. We also discuss the applicability of this method in samples which have strongly non‐linear IV characteristics like carbon nanotubes. The obtained results are compared with regular differential noise measurements where both DC and AC bias are employed.
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Keywords
shot noise, carbon nanotubes
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Citation
Wu, F. & Queipo, P. & Tsuneta, T. & Wang, T. H. & Kauppinen, E. & Hakonen, Pertti J. 2007. Measurements of shot noise in single walled carbon nanotubes. 19th International Conference on Noise and Fluctuations. AIP Conference Proceedings. 922. 257-260. ISBN 978-0-7354-0432-8 (printed).