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Article Dans Une Revue Physical Review B: Condensed Matter and Materials Physics (1998-2015) Année : 2014

Distributions of electron waiting times in quantum-coherent conductors

Résumé

The distribution of electron waiting times is useful to characterize quantum transport in meso-scopic structures. Here we consider a generic quantum-coherent conductor consisting of a mesoscopic scatterer in a two-terminal setup. We extend earlier results for single-channel conductors to setups with several (possibly spin-degenerate) conduction channels and we discuss the effect of a finite electronic temperature. We present detailed investigations of the electron waiting times in a quantum point contact as well as in two mesoscopic interferometers with energy-dependent transmissions: a Fabry-Pérot interferometer and a Mach-Zehnder interferometer. We show that the waiting time distributions allow us to determine characteristic features of the scatterers, for instance the number of resonant levels in the Fabry-Pérot interferometer that contribute to the electronic transport.
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hal-01518897 , version 1 (05-05-2017)

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Géraldine Haack, Mathias Albert, Christian Flindt. Distributions of electron waiting times in quantum-coherent conductors. Physical Review B: Condensed Matter and Materials Physics (1998-2015), 2014, 90, ⟨10.1103/PhysRevB.90.205429⟩. ⟨hal-01518897⟩
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