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

## TL;DR

This paper investigates how assisted hopping interactions affect the linear conductance and magnetization in a correlated quantum dot system, revealing that these interactions can cause conductance plateaus and influence spin polarization.

## Contribution

It introduces a modified equation of motion and self-consistent perturbation approach to analyze the impact of occupancy-dependent hybridization on quantum dot conductance.

## Key findings

- Assisted hopping causes conductance plateaus.
- Hybridization breaks particle-hole symmetry.
- Magnetic field enhances spin polarization.

## 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.