Nonequilibrium magnetotransport through a quantum dot: An interpolative perturbative approach

Abstract

We study the differential conductance, spectral density and magnetization, for a quantum dot coupled to two conducting leads as a function of bias voltage, magnetic field and temperature. The system is modeled with the Anderson model solved using a spin dependent interpolative perturbative approximation in the Coulomb repulsion U that conserves the current. For large enough magnetic field, the differential conductance as a function of bias voltage shows split peaks. This splitting is larger than the corresponding splitting in the spectral density of states, in agreement with experiment.

31 pages, 6 figures, submitted to Phys. Rev. B

References in corpus (2)

• Conductance through an array of quantum dots
• Effect of Electron Correlation on Current and Current Noise for the Single- and Two-Impurity Anderson Model

Cited by in corpus (6)

• Iterative real-time path integral approach to nonequilibrium quantum transport
• Splitting of the Kondo resonance in anisotropic magnetic impurities on surfaces
• Spectral density of an interacting dot coupled indirectly to conducting leads
• Universal scaling in nonequilibrium transport through an Anderson impurity
• Interpolative approach for electron-electron and electron-phonon interactions: from the Kondo to the polaronic regime
• Failure of mean-field approach in out-of-equilibrium Anderson model