https://doi.org/10.1140/epjp/s13360-025-07157-4
Regular Article
Spin-dependent transport through graphene-based quantum antidot nanoribbon in the presence of Rashba coupling
1
Preparatory Institute for Engineering Studies of Kairouan, (I.P.E.I.K), University of Kairouan, Kairouan, Tunisia
2
Laboratory of Chemistry, Materials and Modelling (LR24ES02), Department of Physics, University of Kairouan, Kairouan, Tunisia
3
Azarbaijan Shahid Madani University, 53714-161, Tabriz, Iran
a
This email address is being protected from spambots. You need JavaScript enabled to view it.
Received:
26
April
2025
Accepted:
2
December
2025
Published online:
12
December
2025
Abstract
In this work, we investigated the quantum transport properties of a graphene layer with two semi-infinite leads in the presence of Rashba spin–orbit coupling (RSOC). Our results show that RSOC induces spin splitting in the electronic spectrum, which can be tuned by varying external parameters such as electron energy, system size, and Rashba strength. This tunability gives rise to controllable spin-filtering effects, enabling selective transport of spin-polarized carriers. We further demonstrate that both transmission probabilities and giant magnetoresistance (GMR) exhibit a strong dependence on these parameters, providing pathways for precise control of spin currents in graphene-based devices. In addition, we find that the introduction of antidots leads to the formation of localized states, which play a key role in resonance phenomena and significantly influence spin-dependent transport. These findings highlight the potential of engineered graphene structures for the design of efficient, selective and highly controllable spintronic devices. While our analysis is based on an idealized model and does not account for disorder or structural imperfections, it offers fundamental insights that can guide future experimental and theoretical studies.
Copyright comment Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
© The Author(s), under exclusive licence to Società Italiana di Fisica and Springer-Verlag GmbH Germany, part of Springer Nature 2025
Springer Nature or its licensor (e.g. a society or other partner) holds exclusive rights to this article under a publishing agreement with the author(s) or other rightsholder(s); author self-archiving of the accepted manuscript version of this article is solely governed by the terms of such publishing agreement and applicable law.
