Noise spectra of an interacting quantum dot

Abstract

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.

Added references

References in corpus (8)

• Frequency-selective single photon detection using a double quantum dot
• Shot noise in tunneling transport through molecules and quantum dots
• Non-Markovian effects in the Quantum noise of interacting nanostructures
• The noise spectra of a biased quantum dot
• Delayed currents and interaction effects in mesoscopic capacitors
• Steps and dips in the ac conductance and noise of mesoscopic structures
• Mesoscopic Capacitance Oscillations
• Finite-frequency current (shot) noise in coherent resonant tunneling through a coupled-quantum-dot interferometer

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• Finite-frequency noise in a quantum dot with normal and superconducting leads
• Emission Noise in an Interacting Quantum Dot: Role of Inelastic Scattering and Asymmetric Coupling to the Reservoirs
• Magnetic field effects on the finite-frequency noise and ac conductance of a Kondo quantum dot out of equilibrium
• Finite frequency noise properties of the non-equilibrium Anderson impurity model
• Finite frequency current fluctuations and the self-consistent perturbation theory for electron transport through quantum dot
• Effects of Coulomb interaction on photon-assisted current noises through a quantum dot
• Finite-frequency noise of interacting single-electron emitters: spectroscopy with higher noise harmonics
• Finite-frequency noise in a non-interacting quantum dot
• Spin-polarized dynamic transport in tubular two-dimensional electron gases
• Equilibrium finite-frequency noise of an interacting mesoscopic capacitor studied in time-dependent density functional theory