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

Autor:	Gorski, Grzegorz, Kucab, Krzysztof
Rok vydání:	2019
Předmět:	Condensed Matter - Mesoscale and Nanoscale Physics
Zdroj:	Physica E 111, 190 (2019)
Druh dokumentu:	Working Paper
DOI:	10.1016/j.physe.2019.03.014
Popis:	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. Comment: 13 pages, 12 figures
Databáze:	arXiv
Externí odkaz:	http://arxiv.org/abs/1907.12783 Zobrazit plný text záznamu View this record from Arxiv