Communication Dans Un Congrès Année : 2006

Photo-assisted shot noise in Coulomb interacting systems

Résumé

We consider the fluctuations of the electrical current (shot noise) in the presence of a voltage time-modulation. For a non-interacting metal, it is known that the derivative of the photo-assisted noise has a staircase behavior. In the presence of Coulomb interactions, we show that the photo-assisted noise presents a more complex profile, in particular for the two following systems: 1) a two-dimensional electron gas in the fractional quantum Hall regime for which we have obtained evenly spaced singularities in the noise derivative, with a spacing related to the filling factor and, 2) a carbon nanotube for which a smoothed staircase in the noise derivative is obtained.

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hal-00141126 , version 1 (11-04-2007)

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  • HAL Id : hal-00141126 , version 1

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Adeline Crépieux, Marine Guigou, Alexandre Popoff, Pierre Devillard, Thierry Martin. Photo-assisted shot noise in Coulomb interacting systems. Proceeding des 6èmes Rencontres du Vietnam, Aug 2006, Hanoi, Vietnam. ⟨hal-00141126⟩
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