Shot noise at high temperatures

D. B. Gutman, Yuval Gefen

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


We consider the possibility of measuring nonequilibrium properties of the current correlation functions at high temperatures (and small bias). Through the example of the third cumulant of the current (S3) we demonstrate that odd-order correlation functions represent nonequilibrium physics even at small external bias and high temperatures. We calculate S3=y (eV/T)e2I for a quasi-one-dimensional diffusive constriction. We calculate the scaling function y in two regimes: when the scattering processes are purely elastic and when the inelastic electron-electron scattering is strong. In both cases we find that y interpolates between two constants. In the low- (high-) temperature limit y is strongly (weakly) enhanced (suppressed) by the electron-electron scattering.

Original languageEnglish
Article number035302
Pages (from-to)353021-3530212
Number of pages3177192
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number3
StatePublished - Jul 2003
Externally publishedYes


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