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

Abstract

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.

arXiv comment4 pages, 2 figures

References in corpus (9)

• Shot Noise in Mesoscopic Conductors
• Violation of Kirchhoff's Laws for a Coherent RC Circuit
• Phase coherent transmission through interacting mesoscopic systems
• Transmission Phase of a Quantum Dot with Kondo Correlation Near the Unitary Limit
• Scattering phases in quantum dots: an analysis based on lattice models
• Coherent effects in magneto-transport through Zeeman split levels
• Breakdown of `phase rigidity' and variations of the Fano effect in closed Aharonov-Bohm interferometers
• Quantum dot dephasing by edge states
• Quantum interference in resonant tunneling and single spin measurements

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• Finite frequency current fluctuations and the self-consistent perturbation theory for electron transport through quantum dot
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