Noise spectra of an interacting quantum dot

Details Noise spectra of an interacting quantum dot Noise spectra of an interacting quantum dot

2011-09-10

arxiv.org/abs/1109.2217v2

Physics

Condensed Matter

Mesoscale and Nanoscale Physics

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Scientific paper

We study the noise spectra of a many-level quantum dot coupled to two electron reservoirs, when interactions are taken into account only on the dot within the Hartree-Fock approximation. The dependence of the noise spectra on the interaction strength, the coupling to the leads, and the chemical potential is derived. For zero bias and zero temperature, we find that as a function of the (external) frequency, the noise exhibits steps and dips at frequencies reflecting the internal structure of the energy levels on the dot. Modifications due to a finite bias and finite temperatures are investigated for a non-interacting two-level dot. Possible relations to experiments are pointed out.

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