The Effect of Interaction on Shot Noise in The Quantum Limit

Details The Effect of Interaction on Shot Noise in The Quantum Limit The Effect of Interaction on Shot Noise in The Quantum Limit

2000-06-29

arxiv.org/abs/cond-mat/0006468v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

Submitted to the proceedings of 36 Renconters de Moriond "Electronic correlations: from meso- to nano-physics". One figure add

Scientific paper

We employ a non-linear sigma model defined on a Keldysh contour to study the current and the current noise in a diffusive micro-bridge in the presence of electron-electron interactions. Out of equilibrium the fluctuation-dissipation theorem (FDT) does not apply, hence these two quantities are not simply interrelated. For a two-dimensional electron gas (2DEG) we obtain logarithmic singularities in the low frequency limit. PACS Nos. 71.10.Ay, 71.23.An, 73.50.Td

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