Finite Frequency Quantum Noise in an Interacting Mesoscopic Conductor

F. W. J. Hekking and J. P. Pekola
Phys. Rev. Lett. 96, 056603 – Published 9 February 2006

Abstract

We present a quantum calculation based on scattering theory of the frequency-dependent noise of current in an interacting chaotic cavity. We include interactions of the electron system via long range Coulomb forces between the conductor and a gate with capacitance C. We obtain explicit results exhibiting the two time scales of the problem, the cavity’s dwell time τD and the RC time τC of the cavity in relation to the gate. The noise shows peculiarities at frequencies of the order and exceeding the inverse charge relaxation time τ1=τD1+τC1.

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  • Received 19 August 2005

DOI:https://doi.org/10.1103/PhysRevLett.96.056603

©2006 American Physical Society

Authors & Affiliations

F. W. J. Hekking1,2 and J. P. Pekola2

  • 1Laboratoire de Physique et Modélisation des Milieux Condensés, CNRS & Université Joseph Fourier, Boîte Postale 166, 38042 Grenoble-cedex 9, France
  • 2Low Temperature Laboratory, Helsinki University of Technology, Post Office Box 3500, 02015 HUT, Finland

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Issue

Vol. 96, Iss. 5 — 10 February 2006

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