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Shot noise in mesoscopic systems | | M. J. M. de Jong
; C. W. J. Beenakker
; | | Date: |
19 Nov 1996 | | Journal: | "Mesoscopic Electron Transport," edited by L.L. Sohn, L.P. Kouwenhoven, and G. Schoen, NATO ASI Series Vol. 345 (Kluwer Academic Publishers, Dordrecht, 1997), pp. 225-258. | | Subject: | Mesoscopic Systems and Quantum Hall Effect | cond-mat.mes-hall | | Abstract: | This is a review of shot noise, the time-dependent fluctuations in the electrical current due to the discreteness of the electron charge, in small conductors. The shot-noise power can be smaller than that of a Poisson process as a result of correlations in the electron transmission imposed by the Pauli principle. This suppression takes on simple universal values in a symmetric double-barrier junction (suppression factor 1/2), a disordered metal (factor 1/3), and a chaotic cavity (factor 1/4). Loss of phase coherence has no effect on this shot-noise suppression, while thermalization of the electrons due to electron-electron scattering increases the shot noise slightly. Sub-Poissonian shot noise has been observed experimentally. So far unobserved phenomena involve the interplay of shot noise with the Aharonov-Bohm effect, Andreev reflection, and the fractional quantum Hall effect. | | Source: | arXiv, cond-mat/9611140 | | Services: | Forum | Review | PDF | Favorites | |
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