Influence of assisted hopping interaction on the linear conductance of quantum dot
arXiv:1907.12783 · doi:10.1016/j.physe.2019.03.014
Abstract
We study the tunneling conductance and magnetization of a correlated quantum dot coupled to external metallic leads, considering the occupancy dependent hybridization. Using a modified equation of motion approach and self-consistent perturbation theory we show that the assisted hopping processes can be responsible for appearance of a plateau in the linear conductance. This process breaks the particle-hole symmetry and is manifested in conductance and magnetization. In presence of the external magnetic field the correlated hybridization enhances the spin polarization.
arXiv comment13 pages, 12 figures
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