Influence of assisted hopping interaction on the linear conductance of quantum dot

Grzegorz Gorski; Krzysztof Kucab

doi:10.1016/j.physe.2019.03.014

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arXiv · 1907.12783

Influence of assisted hopping interaction on the linear conductance of quantum dot

Grzegorz Gorski·Krzysztof Kucab

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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.

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Grzegorz Gorski, Krzysztof Kucab. 2019-07-30. Influence of assisted hopping interaction on the linear conductance of quantum dot. https://doi.org/10.1016/j.physe.2019.03.014

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