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Johnson-Nyquist noise in films and narrow wires | | Misha Turlakov
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10 Feb 2000 | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | The Johnson-Nyquist noise in narrow wires having a transverse size smaller than the screening length is shown to be white up to the frequency $D/L^2$ and to decay at higher frequencies as $omega^{-{1/2}}$. In two-dimensional films having a thickness smaller than the screening length, the Johnson-Nyquist noise is predicted to be frequency independent up to the frequency $sigma_{2D}/L$ and to have a {it universal} $1/omega$ spectrum at higher frequencies. These results are contrasted with the conventional noise spectra in neutral and three-dimensional charged liquids. | | Source: | arXiv, cond-mat/0002153 | | Services: | Forum | Review | PDF | Favorites | |
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