4.5 Article

Spintronic transport through a double quantum dot-based spin valve with noncollinear magnetizations

期刊

出版社

ELSEVIER
DOI: 10.1016/j.jmmm.2021.168788

关键词

Double quantum dot; Spin valve; Kondo effect; Noncollinear magnetization

资金

  1. Polish National Science Centre [2017/27/B/ST3/00621]

向作者/读者索取更多资源

This study investigates the magnetoresistive properties of a spin valve based on a double quantum dot attached to ferromagnetic leads with noncollinear alignment of magnetic moments. The results show that the device can exhibit significant positive or inverse tunnel magnetoresistance and can serve as a source of highly spin-polarized current. Furthermore, the spin-resolved transport properties can be controlled by gate and bias voltages, as well as the angle between the magnetizations of the ferromagnets.
We study the magnetoresistive properties of a spin valve based on a double quantum dot attached to ferromagnetic leads with noncollinear alignment of magnetic moments. It is assumed that each dot is strongly coupled to its own ferromagnetic electrode, while the hopping between the dots is relatively weak. The calculations are performed by using the perturbation theory in the coupling between the dots, while the local density of states of a quantum dot attached to a given external lead is determined with the aid of the numerical renormalization group method. We demonstrate that the examined device can exhibit considerable positive or inverse tunnel magnetoresistance. It can be also a source of highly spin-polarized current. Importantly, the spin-resolved transport properties can be controlled by gate and bias voltages and depend on the angle between the magnetizations of the ferromagnets.

作者

我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。

评论

主要评分

4.5
评分不足

次要评分

新颖性
-
重要性
-
科学严谨性
-
评价这篇论文

推荐

暂无数据
暂无数据