Spin-active devices based on graphene / WSe$_2$ heterostructure
Mesoscale and Nanoscale Physics
2018-07-27 v1
Abstract
We consider graphene on monolayer WSe and the spin-orbit coupling induced by the transition-metal dichalcogenide substrate for application to spin-active devices. We study quantum dots and graphene quantum rings as tunable spin filters and inverters. We use an atomistic tight-binding model as well as the Dirac equation to determine stationary states confined in quantum dots and rings. Next we solve the spin-transport problem for dots and rings connected to nanoribbon leads. The systems connected to zigzag nanoribbons at low magnetic fields act as spin filters and provide strongly spin polarized current.
Cite
@article{arxiv.1806.07068,
title = {Spin-active devices based on graphene / WSe$_2$ heterostructure},
author = {Alina Mrenca-Kolasinska and Bartlomiej Rzeszotarski and Bartlomiej Szafran},
journal= {arXiv preprint arXiv:1806.07068},
year = {2018}
}
Comments
11 pages, 12 figures