Steps and dips in the ac conductance and noise of mesoscopic structures

O. Entin-Wohlman, Y. Imry, S. A. Gurvitz, A. Aharony

Research output: Contribution to journalArticlepeer-review

27 Scopus citations


The frequency dependence of the equilibrium ac conductance (or the noise power spectrum) through a mesoscopic structure is shown to exhibit steps and dips. The steps, at energies related to the resonances of the structure, are closely related to the partial Friedel phases of these resonances, thus allowing a direct measurement of these phases (without interferometry). The dips in the spectrum are related to a destructive interference in the absorption of energy by transitions between these resonances, in some similarity with the Fano effect.

Original languageEnglish
Article number193308
JournalPhysical Review B - Condensed Matter and Materials Physics
Issue number19
StatePublished - 17 May 2007

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics


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