Physics – Condensed Matter – Mesoscale and Nanoscale Physics
Scientific paper
1999-08-20
Physics
Condensed Matter
Mesoscale and Nanoscale Physics
3 pages, no figures
Scientific paper
The Johnson-Nyquist noise in narrow semiconducting wires having a transverse
size smaller than the screening length is shown to be white up to frequency
$D/L^2$ and to decay at higher frequencies as $\omega^{-{1/2}}$. This result is
contrasted with the noise spectra in neutral and charged liquids.
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